It is quite easy for people who are experts in hacking their Android device to wipe data and restore their device to the same state as it was before. But if you are a noob, this would be no less than a challenge. If you wish to unlock the bootloader of your device, you need to wipe data completely. Sometimes, when you face issues while rooting your android device – just like a bootloop or something similar, you would always need to wipe data and format your phone. You lose all data on your phone. You can obviously get those applications back, but not the data of those applications. My Need for Speed progress would go waste in such situations
Ultimate Backup Tool
But this would not be a challenge for noobs anymore. You can backup all data on your phone before you unlock the bootloader. You can also backup data on apps without rooting your phone, thanks to the Ultimate Backup Tool made by Gigadroid on XDA Developer forums. The developer has developed a simple tool which lets you backup data on any Android device without rooting that is running Android 4.0 Ice Cream Sandwich and up and restore it later. This means, you can backup all data to your computer before you unlock the bootloader, wipe the data on your device while unlocking and restore it later to your unlocked android device.
The tool works on both Windows and Macintosh. The developer has tested and reported it working on Galaxy Nexus and other users on the forum also gave a positive response about this tool.
You can download the tool from the link at the end of this post. After you download it, connect your device to the computer via the USB cable and having USB Debugging turned on. Extract the downloaded zip file to a separate folder in your PC and run the file “UBT.bat”. You do not need ADB installed on your PC because it is included in the tool. The screen will show you the instructions on how to use the Ultimate Backup Tool.
Some options work only for Galaxy Nexus but as and when the tool is updated, more number of devices will be added. Also, I wish it supports Android 3.0 and 2.3 Gingerbread too. Download the latest version of this tool from the link below: