.AB File

The ab file extension is associated with the Google Android Debug Bridge (adb) command line utility distributed as a part of Google Android SDK that allows developers to communicate with cable connected Android devices.

The ab file stores backup of device including applications, system settings, system data etc.

To create backup with adb connect the phone, run adb and type:

adb backup -all - create backup of system settings and system data.

adb backup -apk -all - create backup of system and applications.

To restore backup file type:

adb restore "name of backup".ab

Google Android Debug Bridge can created backup of mobile devices that have installed Android 4.0 ICS and higher.

Files with ab file extension can be usually found as debug bridge backups from Google Android operating system. 

How to open:

You can import and recover files Android Debug Bridge command line utility.

How to convert:

A conversion for this backup file is unlikely, but you can recover the files using the Android Debug Bridge (adb) command line utility.