iball Andi4.5z Hard Reset or Pattern Unlock
This tutorial tested by me without any risk, just need to remember some impotent notes for data, if you use this tutorial then remember first if you use this tutorial then you can't save data like contacts, mp3, videos, photos because this is factory reset so remember this topic because impotent this step and also check your device battery if low so you can't use this tutorial and check also volume up and down key and power because if this tutorial use then need to three keys for hard reset. You can done problem like Pattern lock, restarting problem, hang on logo, security lock from this tutorial.
Procedure:
1. Charge your battery up to 80%
2. Press and Hold Volume Down + Power button until Select Boot Mode option
3. Now Choose Recovery Mode from Volume Down button
4. Press Volume Up for Enter menu
5. Choose "wipe data/factory reset" from Volume Down button then Press Volume Up button
6. Next Choose "Yes -- delete all user data" from Volume Down button and then Press Volume Up
7. Reboot your device
8. You are done
Note : Volume Down button for Select, Volume Up button for Ok