If we forgot google account or not set google account during apply pattern lock then we can reset mobile via key combination. This procedure is for samsung glaxy pro B7510 pattern lock problem. Follow the steps to solve this problem.
Note: Before do that take backup of important data because this will erase every thing in mobile memory.
- Press and hold power and T/3 key on qwerty keyboard
- Tab android logo
- Select recovery then wipe data
- Reboot mobile with home button