HTC Desire 516 dual sim Hard Reset or Pattern Unlock done
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. Take out battery into device
2. Insert battery into device
3. Press and hold Volume Up + Power key until recovery menu
4. Now Choose "wipe data/factory reset" option from volume down key and press Power key
5. Now choose "Yes -- delete all user data" from volume down key and then press power key
6. Reboot your device choose "reboot system now" and then press power key
7. You are done