These are the instructions to root Huawei Ascend P2 (running on android 4.1.2) using Framaroot Application on Phone itself (does not require computer).
Requirements: Your Huawei Ascend P2 smartphone should have at-least 10-20 percent of phone battery to perform the rooting process.
Optional: You can also verify the root status of your device by using the Root Checker Application.
[*] No data loss process: Your Huawei Ascend P2 Phone Data like contacts, pictures, videos, music and etc will be not affected with the above method.
[*] Device Warranty: Once you full unroot your device through SuperSU, you can claim for the phone warranty. In short no need to worry for phone warranty.
[*] Huawei Stock Firmware: If you are looking for the Original Stock Firmware, then head over to the Download Huawei Stock Firmware page.
[*] Huawei USB Driver: If you are looking for the Original USB Driver, then head over to the Download Huawei USB Driver page.
[*] Credits: Framaroot Application is developed by alephzain (XDA Developer).