Lenovo P70
In this post, i will tell you how to remove your device pattern lock. first you need to backup your all impotent data and remove the sim card and memory card.
1. Switch off your smartphone pressing the power key to turn it off.
2. Pressing And Hold Volume Up + Power Key Until Show Logo On Screen.
3. After a Few Second Show Boot Mode And Release All Keys.
4. From the menu you need to select this option "Recovery" Use Volume up Scroll and volume down to confirm.
5. After That Select this "wipe user data"
6. now Select "wipe user data" confirm use volume down key.
7. then tap this option "fuse format data" and tap again yes.
8. After Finish whole process select "Reboot"
you Successfully finish.