1. What is Android?
Android is a Linux-based operating system designed for mobile devices such as smartphones and tablet computers. Android was officially unveiled in Nov. 5, 2007 by Google, consist of Android OS, middleware, user interface and applications.
The first Android-powered Google phone was sold in September 2008 by T-Moblie USA, Inc. T-Mobile G1 was manufactured by HTC, Taiwan, supporting WCDMA/HSPA network and Wi-Fi with 7.2 Mbps downloading speed. The first Motorola Android smartphone CLIQ was equipped with all the software needed by mobile phones and had no proprietary limits.
Google and many other mobile phone companies founded the Open Handset Alliance: a consortium of hardware, software, and telecommunication companies devoted to advancing open standards for mobile devices and advocating Android OS. The basic and core technology is provided by Linux, other applications are to be developed by individual companies based on Java.
Android uses WebKit browser and is designed to be a touchscreen mobile device that users can check Emails, surf the internet and watch video programs. Its user-friendly interface will bring you fantastic experience ever.
2. What is APK?
APK is short for “Android Package”. It is a file format similar with Symian Sis or Sisx and can be installed when delivered to Android smartphone. Generally, there are three ways for you to install APK:
1). Double click APK file on the computer with the help of mobile assistant and install it on your Android device.
2). Import APK file to the SD card on your Android phone. Run the APK Installer Program and then install APK on your device.
3). Directly download and install APK in the Google Play or some other Android App platform. Usually, you will download a file in .zip, which is also supported to install Android OS.
3. What are ROM and RUU?
ROM is a sort of data file used to brushing your Android OS. ROM installed on your Android contains the operating system and basic applications to make your phone work. But when something goes wrong in the process of updating with ROM, RUU comes to help. RUU, as an original version of ROM, is a safe update tool helping you upgrade your Android successfully. It allows you to revert back to stock recovery and retrieve your Android OS if you failed to update.
Besides official RUU file, more popular custom ROMs are supported on Hero, such as CyanogenMod, Paranoid Android, MoDaCo and FLZYUP. You can directly copy these ROM files to your SD card and install one of them in the Recovery mode.
4. What is Root? Why we Root?
Root seems to be a manager of your Android phone. With root access, you have the administrator control over your Android phone.
Although there exits risk that Hacker will invade your device as the system is unstable after Benefits of rooting still attracts Android users. Once you achieve the root access, you can visit or change almost all the files on the device, replace or alter applications and system settings, run specialized apps or uninstall apps you don’t want. Limitations and restrictions set by the manufacturer or carrier will not work any more. Moreover, you can have faster platform updates and enjoy the latest Android OS.
5. What is Recovery?
You can enter Recovery Mode by pressing “Home” and “Power” buttons. Then you can choose to update or back up your system. Actually, most Android devices have a recovery mode that can be used to fast boot the device, recover, wipe and update the device.
With a custom Android recovery, you can install official or unofficial ROMs as well as other updates including apps, themes, kernels, etc. using zip format files. Better to wipe before the update but that will lose all your personal data on the device. Make a backup before or you can choose not to wipe.
More Android information is available here for you. Hope they can help you when using Android smartphone. If you have any questions, please let us know in the comments. Suggestions and advices are also appreciated.