The cost of app development in singapore

1. One is to use existing templates to modify
The use of the template has a small workload. If it is an APP with simple functions and less demanding customer requirements, it is only necessary for the artist to modify the page of the front desk to a certain extent. The minimum time is one or two days, and the minimum cost is 2,000 yuan to 3,000.

2, one is all redesigned
All redevelopment is more troublesome. Art, planning, APP developers, back-end programmers, and other types of work are required to be completed collaboratively. Large-scale and complex-functional APPs even require dozens of people. A simple app for life applications, not relying on the background, even design + development commissioned, direct development duration = 2 weeks, program + communication + test + modification = 2 weeks, before and after about 1 month to see the team quality, The price should be in the range of 30,000 to 100,000; complex front and back App, looking for spectrum team, the price should be around 100,000, and the period is about 2 months to 3 months.
3, the current mobile app development company, different software development companies, the price is not the same, a large mobile app company developed, custom applications are more professional, skilled, they may need the price relative Lower. But now, just customize a corporate application, product display, ranging from tens to thousands of prices. From customizing an APP to putting it into use, first the customer needs to pay about 30% of the deposit after signing the contract with the production company. The company will issue a preview of the software page to the customer. The customer can customize the color of the page according to their own needs. , functional division and other content for a comprehensive revision. After the customer finally decides to make a decision, he must pay 50% of the total cost.
4. Afterwards, the production company will make the production according to the requirements of the customer. According to the complexity of the APP, the process will be from half a month to several months. After the APP is successfully created, it will enter the test period. The test can be conducted by the company's expert on-line testing, or it can be delivered to the customer for use, and the customer can perform the test on its own. According to the problems found in the test, the company made another change.
The test period is about 3 months, and the simple APP time will be shorter. After the test is completed, the APP will be used by the customer, and the customer needs to pay the balance of the last 20%.

5. When the pp is released on the line, it does not count the channel promotion cost and does not advertise. The iOS App Store on the line requires the registration of a developer account, and the purchase of a certificate also requires a certain cost.
If App wants to run well, it must first invest money to promote your app. For an APP that has no popularity and no user base, promotion is a necessary part. At present, the most common promotion methods are download platform promotion, parallel mobile phone and home-made system promotion.
6, in general, the price of an app, the overall calculation is not cheap. If individuals or companies want to develop an app, or find some well-known app development companies to cooperate, so the cost is relatively small, in the Internet era of the Internet, app is the development trend of each SME, when someone asks how much money an APP needs, you can Answering a less complex app, starting from scratch, the first half of the year comes out from 2 to 200,000 to see how to choose.

Mobile wallet APP development is a key of financial management

With a mobile wallet, you do not need to carry your physical wallet with you. In fact, apps such as Alipay allow you to shop and buy discounts at home, and, according to the mobile wallet app developer, the wallet app offers interconnected bank accounts, credit cards, mobile accounts , Bills, etc., and better manage all your financial transactions. The advantages of mobile wallet APP development are ease of use, unlimited facilities and better management.

Advantage of mobile app singapore
1) easy to use:
Pay with your mobile wallet in just one click. Simply link your credit / debit card, bank account details to your wallet once and save it for trading anywhere, anytime.
2) unlimited facilities:
With a mobile wallet, you do not need to carry your physical wallet with you. Mobile wallet contains all your credit card information, in fact, such as Alipay such app can make you home shopping and buy discounts.
3) Seamless trading
Mobile wallet handles very fast, you can instantly transfer to anyone in the world. What else? You no longer need to change.
4) better management:
According to the mobile wallet app developer, the wallet app provides the opportunity to interconnect bank accounts, credit cards, mobile accounts, billing, and better manage all your financial transactions.

Mobile wallet APP development  program
2, application performance, app performance is to attract users, enjoy the higher return on investment the only way. When your mobile wallet app immediately connects with different bank servers and caters to your needs, they will be happy to use your app again. And if your application loads slowly, users will be frustrated and give up your app.
3, Portability, app development can make your mobile application more portable by allowing users to easily add money and make transactions. According to the top Shenzhen app development company's experience, this is the main reason why users now often use the mobile wallet app.
4, Reward system, because the reward can effectively attract customers, so you need to add this feature to each mobile application. You can try different rewarding tips, such as offering some travel points or cashbacks.
It is also a good idea to design an electronic wallet that automatically backs up the files used in each operation. After all, it will help the app store all the basic information users provide for future preferences.
6, menu, although not necessary, you can also take a look at this factor. When you provide the ability to organize all your cards in different wallet menus, users can easily perform tasks. In addition, you can give them different custom options, such as assigning different colors and icons to menus.
7. Financial tools, like menus, are an extra tool that you can integrate into your mobile wallet app so that customers can monitor their spend and better plan their finances.

Mobile wallet App development allows people to pay through their smartphones, eliminating the need to carry credit cards and cash with them or transfer money online with the ATM. With just a few clicks, you can buy / pay for anything.

How to create an app in singapore

In the context of such a popular mobile APP, you also have the idea to develop their own app? So the question is, for what you do not understand, how to develop their own app? But do not panic, because next I will take you to find out how mobile app development in the end is one thing.
Step1: Clear your goal

Just having ideas is just your first step, and that's not enough. Before you formalize the details, you have to figure out the specific goals of your app. What can it do? What is its core competitiveness? What practical problems can it solve?


Step2: Sketch

By drawing sketches you visually present the features and general structure of the app to your team to help them understand your thoughts. At the same time, the sketch also provides the basis for the next step.


Step3: Investigation

Four goals:

A. Are there any other similar applications doing the same thing?

B. Find inspiration for your app design.

C. Understand the technical requirements your app needs.

D. help you think about how to market and improve your app.

You may think your idea is unique, your design unique, but the reality is likely to give you pour cold water. There are millions of on-line app on the market, do a good job surveys are definitely outweigh the disadvantages.

Step4: Wireframe and storyboard

This stage is more specific to their own ideas. Draw your app entity model, you can preview a variety of functions. The storyboard is actually a circuit diagram. This roadmap can help you better understand the links between your app's pages.


Step5: Determine the back-end structure of the app

With the previous step you already have the foundation of the back-end structure. Sketch diagrams of servers, APIs, and charts. app developer will thank you.

Note that the wireframes and storyboards should be adjusted appropriately based on the technical limitations (step4).

Step6: test

Your app is now ready for preliminary testing. Find people you know and let them work with your app, then tell you the trial experience and suggestions for changes. This step can help you to more specific your app, the more detailed the details of your app before the formal design begins, the later the process will be smoother.

A powerful tool of android development in singapore

Antonis Tsagaris, an Android developer, recently blogged about 5 Android apps that are not intended for average consumers, but for developers and app designers singapore. What exactly is App? Let's take a look.

As Android developers, mainly for the development of consumer App, but we should not forget those developers for the mobile app development singapore.

Today I want to introduce 5 App, I have a Pixel XL phone, which built a folder called "Developer", collect some App, these 5 App from the folder. These apps are not as simple as storing them in folders. In fact, these apps have become an integral part of my personal workflow.

Termux

Let's talk about Termux To be honest, Termux is really great, if you do not want me to introduce, write an article introduction is not an excuse.

Termux is a Linux terminal emulator that packs managers, theme features, and floating gadgets. There are a lot of development kits for users to download, it is quite simple to use, just need to execute the command:

apt-get install { package-name }

apt-get install {package-name}
How do I use it? I ran a lightweight Node.js push notification server on a 2013 Nexus 7 phone, an App service I developed for myself. In other words, I had to load Node.js, Express (the most common base module for NodeJs development) and various node_modules into Termux.

Recently, I wanted to install a TyperScript compiler because I wanted to see how it would output JavaScript and learn about it. When I execute the command:
apt-get install tsc

It does not work, and then I realized that installing TyperScript via npm would do just that.

You can download Termux from the Play Store, a free app, except for some attachments. Pay it, developers worth rewarding.

The cost of Android APP development in singapore

Although the popularity of mobile APPs is based on the emergence of the Apple smartphone iPhone, as more and more technology advances, more and more people nowadays prefer mobile phones using the Android smart operating system. With the increasing number of Android smart phone users, more and more people now want to develop Android APP. So how much is the Android APP development singapore?

The cost of developing APP applications is mainly affected by many factors, the most important of which depends on the functional complexity of the Android APP development and the number of personnel required to calculate the required APP development cost. Then the following will be some examples to illustrate in detail for everyone to develop Android APP required by the detailed costs.

1, independent Android APP development technology program prices

If you need to develop a separate Android APP applications, customers can find their own professional APP development company to cooperate to provide their own product design and UI design, then only need to provide APP APP technical services, as Xiaobian understand Android APP's price will be more than ten million. This belongs to the ordinary file manager independent APP development, with full functionality, completed in two phases of development, which lasted two months, into a program app developer singapore.

2, a simple function of display class Android APP development costs

As for a news Android app, it needs simple functions and just needs news list, news page, picture view and basic setting items in APP development. APP development is relatively simple, so the cost of Android APP development is only Need to invest in a development technician, UI design is provided by the customers themselves, such a simple function of news APP development, its APP development costs also need to tens of thousands.

So, we can see that the price of Android APP development is affected by many factors, the most important thing is to look at what features the client needs the APP development software, how complex the development needs, how much manpower needs to be invested, these are the detailed input of each dollar . And the examples described above are also just the price you need to invest in the development of technical staff, if coupled with the price of UI designers, it is estimated Android APP development costs will be higher. But in short, the price range of APP development will be tens of thousands to hundreds of thousands or more.

Apple Augmented Reality APP reached 1000 in singapore

Faced with the assimilation of the smart phone market, Apple's Cook, the mobile phone Augmented Reality (hereinafter referred to as "mobile AR") as a differentiated selling point in the new operating system launched the development platform ARKit. However, according to the latest news from foreign media, developers are not enthusiastic about augmented reality development and have less and less software to upload.
In the iOS 11 operating system, Apple introduced ARKit, third-party developers can facilitate the introduction of augmented reality software. In addition, in the iPhone X mobile phone, Apple also implanted a three-dimensional identification sensor that can identify objects and spaces, including human face, to establish a digital model to help develop augmented reality capabilities.
However, according to AppleInsider, a U.S. technology news site, statistics from professional companies show that Apple developers are not as enthusiastic about augmented reality as Apple did.
Statistics released by mobile Internet market research firm Apptopia on Wednesday showed the AR software in the Apple store increased significantly in September when it first appeared, but hit a new low in November and rebounded slightly in December.

According to statistics, in September, Apple stores uploaded more than 300 ARKit-based applications, down from 200 in October to 150 in November. December rebounded to 170.
To date, there are about 1,000 ARKit-based applications in the Apple Store, totaling 3 million downloads.
Statistics show that about 30% of augmented reality software belong to the game category, the second largest category is entertainment, accounting for 13.2%, followed by tools, accounting for 12%. Other software is distributed in educational, photo, video, living tools and other categories.
It should be noted that although ARKit was introduced in iOS 11, only the iPhone X mobile phone with the 3D identification module can really use the mobile AR function. For example, if a user swipes a room with a cell phone to measure the interior space, an app developer may also place virtual items, game characters, etc. on the three-dimensional model identified by Apple ARKit.
Various data show that iPhone X mobile phone sales have fallen into a downturn. The $ 999 pricing outweighs the purchasing power of some consumers, which also affects the user base of mobile phone augmented reality. According to Taiwanese media reports, Apple has reduced its iPhone X sales forecast for the first quarter of this year from 50 million units to 30 million units.
In several previous public occasions, Apple CEO Cook a high profile talk about cell phone applications augmented reality. In the past year, the decline in Apple's mobile phone, consumers questioned Apple's ability to innovate, so Cook hopes to use the phone AR to iPhone in the smart phone market to achieve differentiated competition.

After Apple introduced ARKit tools, Google also quickly adjusted the strategy to imitate Apple's ARCore platform, ready to launch AR features in Android phones. However, in the three-dimensional recognition of hardware, Android development  lag behind the iPhone.
In addition to mobile phones, Apple is also developing augmented reality headset products, the specific product form is similar to the VR helmet or AR glasses, is still unknown.

The concept and role of the mobile app scene in singapore

The role of the user is fixed, static, and only put it into a certain scene, will be alive and interact with the product.
Scenarios are "idealized" scenarios in which personas interact with the product. It tells the story of how each persona interacts with the product. Each person character will correspond to a scene, or even more, in order to cover various situations in which the user uses the scene.

Use personas for contextual mining in scenarios: Designing a sensible scenario for each personas, then brainstorming with staff (not just interaction and visual designers) of app design. At this stage everyone should have a deep empathy, and at every point of the joint he can put aside what he can think of, say it completely, and record the atmosphere at this time is also unconstrained and non-critical.
In this time axis "life day" as an example, to use mobile phone browser product character to carry out demand mining. for example:
In the morning, just get up: Will see the weather forecast, the calendar may be involved in the function: weather, calendar.
When eating breakfast: may look at the news, mail, and your own blog. This will be designed to news, microblogging and email.
And the traffic on the way: Morning Office: Noon Lunch: Afternoon Office: Before get off work: on the way: in the restaurant: home: blanket and so on a variety of state down to tap the possible functions.
Each person character through the mining of one or more scenes, to be listed on the functions involved, and according to each person's role in the importance of defining the weight of each function, and create excel file.

1.4 user demand for the promotion of product demand, resulting product demand list
The user needs obtained above, and can not be directly transferred to product demand, need to go through a certain evaluation and handsome election to examine the feasibility and necessity.
Feasibility: Is current technology and enterprise resources capable of mobile app developing that fully meet the needs of users under realistic conditions, such as current conditions and schedule.
Necessity: Whether or not these needs of users need to be met to meet the needs of enterprises to pay the price, and whether there is sufficient corporate effectiveness to support the operation of the market.

After the above verification, and combined with the aforementioned stakeholders described above, competing products, benchmarking market and internal seminars and other user needs obtained, so as to get a complete list of user needs.
All product requirements here are translated into product features. Staff can incorporate functional requirements collected during previous user research phases into a list of requirements that they later tap into the scene using the task's role. They essentially correspond to different personas.
Here, the product of the weight of the character (which can be divided into 3-point scale or 5-point scale according to the primary persona, the secondary persona, the unimportant persona, etc.) and the weight of the corresponding task is the overall degree of importance of the function.

How to calculate app development price in singapore

With the development of mobile Internet, mobile app development has become the trend of the times. App development technology has become more and more mature and gradually popularized. Now it is very simple to create an app. How much does it cost to develop an app? How much does it cost to make an app? I think that's one of the issues most app developers receive the most from their clients. After all, how much does it cost to produce an APP? Today, I will detailed analysis of this issue, please continue to look down.

1, different production costs of mobile APP platform is not the same
How much does it cost to make an APP? There are currently two popular native mobile APP production platforms on the market: Android and iOS. The production cost of mobile phone APP software for making different platforms varies. In general, the cost of making APP software for mobile phone iOS app development is more expensive than that of Android platform. Because Apple has closed the iOS platform and the mobile phone APP-developing language Objective-C The difficulty of making APP developers have increased the difficulty of iOS system mobile APP development. Therefore, how much to develop an APP, and the development of the version.
2, APP production costs include the salaries of participants
Usually, an APP production development process needs a app developer, a client engineer, a UI designer and a product manager. This is already a relatively simple configuration for making a mobile APP application. Therefore, the salaries of these participants are also Included in APP production costs. The monthly salary of these workers may add up to more than 45,000 yuan of production APP costs. So, how much to make an app is related to these factors.

3, the cost of mobile APP also depends on its functional complexity
In addition to the APP costs mentioned above, the APP platform and participants' salaries are also affected by the complexity of the APP's production functions. A simple APP may need a shorter production time, then the cost of APP production will be less, usually 6 to 10 million can be completed a simple APP production; a little more complicated mobile phone APP features, production time will be Longer, then the cost required is relatively high, you may need a dozen to hundreds of thousands of price.

4, the location of outsourcing team
How much money can make an APP, in fact, the same ability of the outsourcing team, in different cities will result in differences in APP cost price. For example, outsourcing teams in Beijing, Shenzhen and Shanghai are naturally more expensive to develop because of the relatively higher salary and other expenses for local developers.
5, customer budget
If there is a lot of demand for the production of APP products, but the budget is not enough, so it is also plausible that customers should determine the functional requirements of the products according to the budget. To budget APP software development costs are how much money.

What is popular today of app development technology in singapore

In recent years, with the rapid development of the Internet, the use of mobile App has become more and more popular in people's lives. With the rapid development of the demand of App, the mobile App development technology has gradually become mature nowadays and there are many popular products in the market App Development Technology. So what are the specific app development technology is now popular? I will tell you today.

First, the native App development technology
First of all, to introduce the mobile application development technology used by most App developers, and also the developing technology used by mobile App software on the market, it is based on iOS platform and Android platform App development technology, these two Kind of mobile phone development and application software technology are collectively referred to as native App development technology.
The development technology language used in the development of mobile apps based on the iOS platform is Objective-C. However, in 2014, Apple also released a new Apple mobile application development language called Swift Language at the developer's conference. IOS App application can be developed in both languages. The technical languages ​​used in the mobile App development that runs smoothly on the Android operating system platform are C language and Java language. Both of these App development technology languages ​​need to be adapted to different App development tools to write and implement App functions respectively. Using the NDK native suite provided by Google for App Developers; the Java technology development language requires the Eclipse Mobile App Development Tools.
App applications developed using native App development technology can be downloaded and installed directly on the user's mobile phone, which is also the development technology used by most App software.
Second, HTML5 phone App development language
Then, to talk about science and technology to be talked about is the HTML5 mobile App development language, this App development technology language was also developed by the World Wide Web in 2014 HTML5 technical standards, so easy to use HTML5 mobile App technology by many developers.
The biggest advantage of HTML5 development technology is that it can be debugged and modified directly on the web page. Therefore, there are many mobile phone magazine App client development based on HTML5 standard. And with the finalization of HTML5 technical standards, more and more Singapore App developers began to use HTML5 technology to develop mobile App applications, HTML5 mobile App development technology has also been the development prospects of many industry optimistic.

The process of mobile app development in singapore

The operation of each mobile phone is a combination of hardware and software. The competition in mobile phone hardware has never stopped. As the quality of hardware converges, the software experience becomes crucial. More and more companies are beginning to develop their own APP, all kinds of business, services are summarized in a small APP which greatly facilitates the customers and their own use. Frequent customer inquiries about APP development process is like? Are divided into several stages? Need to pay attention to what matters and so on. I sort out the entire APP detailed and complete development process, hoping to help companies interested in developing APP.

First, user needs analysis

User needs analysis is the most important part of the entire APP development process. The success or failure of an APP is also determined by this. The user needs analysis here is based on the user's requirements to sort out the APP function. The main body is the user, "user-centric" because many companies require the development of the APP is for its users, so finishing APP development needs, not only to understand the needs of the development of enterprises, but also understand its customer base The demand. Finally, these needs are sorted, classified, sorted out the general APP functional framework. This process requires close communication with customers, and strive to be without any doubt, so as to avoid the development of impractical APP.

Second, the product prototype app design

After conducting a round of user needs analysis, the sorted requirements are sorted and sorted into functional structure modules. In this case, the existing functional modules can be used to build a simple product prototype. The product prototype is similar to the sketch of an APP product, showing the basic functional structure to the customer, and can simulate similar APP products with product prototyping software. The prototype of this product to confirm with the customer, confirmed that we can enter the next part of the development.

Third, UI visual design

Based on the product prototype,app developer began to beautify the interface of the APP, according to the performance of the layout of the layout design, design style control, and each area for the corresponding color, draw function menu icons, design page Elements, etc., in the meantime you need constant communication and modification, and ultimately design all the APP interface renderings. Fourth, the database structure According to the needs of the analysis of functional data processing, the establishment of a reasonable structure of the database table, optimize the data algorithms to improve the efficiency of data processing, data in the process of using APP to ensure the safety, accuracy, stability and Timeliness.

Fifth, server development

The core process of APP application is completed by the server-side program, the client's APP just need to send and receive data. Due to the limited hardware configuration and storage capacity of the user's mobile device, the core data processing process is performed by the server. This method is also called cloud computing and is fed back to the client APP after the server finishes processing. Therefore, the development of server-side program is extremely important, all the functions need to be strictly in accordance with the needs of the analysis phase of finishing functions to develop.

Six, iOS / Android client development

Programmer in accordance with the APP renderings for client development, the design renderings of the code implementation, write function call interface, connect the server side, the server-side data to interact with the development of consistent with the results of the APP client.

Seven, APP program testing

Developed a good app client for a comprehensive test, the test simulates the normal use of the user and the abnormal use of the situation, usually some test data into the test, the test results are recorded, the error is returned to the development stage Repair, if the test is passed, then the overall APP development process has been completed. The finished APP application to users for trial, the user satisfaction after the next step. Eight, uploaded to the application store After completing the signature verification, the development of a good client APP program submitted to the application store. iOS version of the APP submitted to Apple's AppStore, Android's submission to the major domestic Android application store.

Eight, APP maintenance and update

The APP after going online is maintained, user feedback is collected, and bugs in APP applications are fixed in time. If the client needs to update the function of the APP, it will return to the stage of developing the required functions and the updates will be released after the new function is developed and tested.

As you can see, a APP's development process is not simple, each step is rigorous and meticulous, which requires the development team has a profound experience and close cooperation, the only way to create a popular, easy and smooth operation, In line with customer habits APP.

What should we pay attention to when develop a safer APP

Due to the growing popularity of Android and iOS,mobile app developer submit an average of about 1,000 app applications daily at the Apple App Store. Experts calculate that there will be more than 2.15 billion smartphone users worldwide by 2017, a figure that alone answers the fact that mobile app development will be considered the most intriguing thing. Starting from the application's security, let's take a look at the top ten mobile app trends. In 2016, the use of mobile applications accounted for 86% of mobile clients, an increase of 6%.

So what are the key barriers to effective mobile security?
Due to the open source feature, Android has won the support of the majority of manufacturers and developers. According to a foreign research report, the share of China in the first three months of July this year dropped to 14.3%. At the same time, Android market share increased to 85%, setting a record high. The growth of market share makes the Android application market more prosperous, but there is a growing prosperity behind the growing problem that a large number of Android apps are pirated. Domestic Android app piracy serious and domestic ecological, various domestic Android market distribution channels, while there is only one foreign Googleplay.
The lack of a clear market definition and understanding in a global business community, the lack of understanding of modern security vulnerabilities, has the consequence that business leaders lack the purpose of buying; traditional rather than mobile priorities, devices and networks Security; a device-centric, user-centric approach; a lack of security standards in an innovative emerging market; and the security of mobile devices and applications.

We have outlined the following approaches: Avoiding / reducing threats and risks:
The traditional access control, that is, the protection of device passwords and idle time screen locks; the application source where the user decides whether they want to use an application based on the publisher's identity; encryption, that is, in such a way that only authorized parties can access it The ability to access sensitive data and systems within the limits of authority; access-based access control, which grants permissions and then limits the application's ability to access devices / systems within its authority; There are many developers lack of security awareness, developed Android app did not take any protective measures, can be easily anti-counterfeiting pirates.

Some syntax and design specific to android programming, there is also the risk of being attacked, usually our code will be carried out before the official safety scan, scan the most important thing is to scan the following points: This is relatively simple, does not allow the printing of sensitive data, and then Before publishing the print log must be turned off the switch. In order to start another application Activity, we often use some implicit Intent, if it contains some sensitive information, as long as the third-party app registered the same Intent Filter, it is possible to intercept sensitive information, so send an implicit Intent , You must specify the recipient and permissions.

some issues we may overlook when develop mobile app

A few years ago, mobile game APP development is very popular, the development has now been very mature, in its rapid development, there have been some problems, such as mobile games App crack, piracy problems have become increasingly prominent. Nowadays, there are a great variety of APPs for mobile games on the application market, both successful and unsuccessful. Therefore, before developing a mobile game APP, developers should understand a few issues that are easily overlooked.

Mobile game APP development easy to overlook some of the issues

We all know that the first thing to do before developing an APP is the market research, research what aspects? Such as user needs, application functions, and then according to their own ideas and ideas for product positioning. Here there is a problem that can easily be overlooked, whether the product orientation is male or female, or is it common?

According to the Guangzhou APP development network Xiaobian understand, 90% of women install the mobile APP more than 50% of the game, playability, phone storage capacity, the sustainability of the game, whether the impact of speed is the key factor girls install the game App . It's not surprising that hand-to-hand gamers have a gender gap of fifty-five, so stop focusing on male gamers, and female players can also be included in the developer's user base. If a app developer find that their gamers have a high percentage of male or female gamers, they can use the data to further improve the game.

Another problem that can easily be overlooked is security. Popular mobile games APP will often be eyeing others, malicious code is implanted into the second package into new applications, spread through some insecure applications market. Hackers use these malicious code to remotely control the user's mobile phone, the implementation of the replacement or deletion of data in the user's mobile phone, steal user privacy secretly upload, download software, call the designated phone and other dangerous operations. In the placement of ads, they will use their own advertising SDK to replace the software built-in advertising SDK, and then will remind the floating window, notification bar reminder, advertising and other forms appear in the user's mobile phone to induce user clicks.