How to set the password for Android phone? For example, WeChat, SMS, QQ and other programs have to enter a password to open?

Go to Settings, select "Security and Privacy" settings, and then select "Screen Security" settings. Here, you can set the unlock password for the mobile phone to increase the security of the mobile phone.

Android is an operating system based on Linux kernel. It is a mobile phone operating system released by Google on June 5438+065438+1October 5, 2007. Not a mobile phone, but many mobile phones use Android. Android is a mobile phone system and one of the popular mainstream mobile phone systems. Mobile phone systems include java, Saipan, windows2000 and windowsVista, which are similar to computers. This system is often used in HTC mobile phones and belongs to intelligent system.

Basic introduction

Android phone refers to a smart phone equipped with Android operating system. Nokia uses Symbian system. Now Google's Android system is more open than Symbian Android phone, with more software resources and much higher playability than Symbian. Now the market share exceeds Symbian, and even exceeds the share of Apple's IOS system. Android is an operating system based on Linux kernel. It is a mobile phone operating system released by Google on June 5438+065438+1October 5, 2007. Not a mobile phone, but now many mobile phones use Android. Android is a mobile phone system and one of the popular mainstream mobile phone systems.

Now there are mobile phone systems, such as java, Saipan, windows2000 and windows Vista, which are similar to computers. This system is often used in HTC mobile phones and belongs to intelligent system.

On August 6, 2005, Google acquired the American Android company, which was supported by the mobile phone giant Motorola. Motorola abandoned other operating systems (including its own Linux and UIQ) in August of 20 10, and only supported Android. Android's characteristic business is mobile phone software, and then Google developed Android business on this basis.

In the process of android development, Motorola pays for the core code, Google pays for public relations and brand effect, and of course, its google app, but Google has mastered the Android market, through Android? A large number of users obtained by google apps. The word Android first appeared in the science fiction novel Future Eve published by French writer Lill Adam on 1886. He named this machine that looks like a human a robot.

System version

Before the official release of Android 4.4 Galaxy NoteAndroid, there were originally two beta versions named after famous robots, namely Astro Boy and Clockwork Robot (Android 1.0). Later, due to copyright issues, Google changed the naming rules to use dessert as their system version code.