How to delete and backup system apps on Android

If you have rooted your Android and for some reason your apps that comes with your phone or ROM bother you or you don't need them, following this tutorial you will be able to delete them. Finally there is a short tutorial on how to restore deleted application, if you want to retrieve your old apps.


So get started. You must have:

• Rooted Android phone
• ADB driver installed on your computer

Instructions:
1. Enable writing to the system partitionDo not worry, this change is only temporary, until you delete applications you do not want.

a) Connect your phone to computer using USB cable.b) Open the Command Prompt (Start -> Run -> cmd and then press ENTER)c) In the command window, type: adb reboot recoveryThe phone will reset into recovery mode.d) Then, type: adb shellThe first character in the command window will become #e) Then type: mount-o rw-t yaffs2 / dev/block/mtdblock3 / systemThis order you get access to reading and writing to the system partition.

2. Backup applicationsBefore deleting, it is good practice to back up system applications in order to get them back if you change your mind.

a) In the command window type: exitThis will leave the shell mod-a.b) Type: adb shell ls system / dataYou should now see a list of all applications that are in the system directory.c) For the application you want to backup, type:adb pull system / app / <full_name_of_app.apk> <puno_ime_aplikacije.apk><puno_ime_aplikacije.apk> the name of the application you want to back up. Find the name in the result from step b).d) After this  apk file applications backup you just need to be located in the folder from which you run command prompt.

3. Deleting applicationsThis is where once again you must complete step 2 before moving to delete the application. Also, it is important not to delete any of the important system applications, such as, for example. Sense (called Rosie).

a) Re-enter the mode by typing shell: adb shellb) Type: cd system / appc) Type: lsThis will suggest. Apk Application files in the system directory.d) Type: rm <full_app_name.apk>This application is permanently deleted from your phone.e) If you are turning the pages and noticed applications fail <full_app_name>. ODEX delete that file too.

4. ResetWhen you finish deleting all unwanted applications, reset the phone. If everything went well, the system will be free of the applications that you delete this method.
5. Restore Deleted application (optional step)
a) Repeat the entire Step 1 in this tutorial.b) Find the application you want to go among those who have backup in step 2 this tutorial.c) Type: adb push <full_app_name.apk> system / app / <full_app_name.apk>

How to install apps on SD card - Android Froyo

We are sure that you're like me at least once experienced the problem of lack of space in internal memory. This usually happens because Andoid OS install applications on the internal memory, and only the version Froyo, you have the possibility that some of the installed applications switch to your SD card. Some apps, because there are still a large number of applications from the market is not yet updated to usethis feature in this version of Android OS.

Following the instructions in this tutorial, configure your phone to all the applications you have installed, are installed on the SD card in your phone.


Requires:

• Android Phone with Froyo
• ADB installed

Instructions:


1. Turn on debugging on your phone (Settings-> Applications-> Development-> Debugging USB)
2. Connect your phone and PC
3. Open a Command Prompt (on the PC Start-> Run, type cmd and then press ENTER)
4. In the command prompt type: adb shell am setInstallLocation 2
5. Press Enter


Potential problems and frequently asked questions


Q: Widgets are installing, you can put on your desktop.
A: Widgets can not work with SD cards. We need to move them to the phone's internal memory.

Q: How do I transfer applications to the phone memory?
A: Go to Settings-> Applications-> Manage Applications, select On SD card, and find a widget or application you want to switch to internal memory. When you select it, click Move to Phone.

Q: I do not like this change, can I restore the settings that were originally on the phone.
A: Yes. Repeat the steps in the tutorial, but you will in step 4 At the command prompt type: adb shell am setInstallLocation 0