It will remove all the data ,contacts and apps that you installed
At the very beginning use the Power key in order to turn off the cell phone.
In the next step press and hold Volume Down + Power button at the sime time for a couple of seconds.
When you see the three Android images, then release held keys.
Then use the Volume Down to select option "Factory reset", and press the Power button to confirm.
Well done! The hard reset has just been performed.
If the display is off, press the Power button to turn it back on.
Then from Main Menu go to Settings and tap Backup & Reset.
Afterwards choose Reset phone and select Erase all data.
Tap OK to confirm your choice.
Success! The hard reset is done
HTC 820G+ Restore Factory Hard Reset Format Phone.So lets start the HTC 820G+ Restore Factory, HTC 820G+ Hard Reset.Turn Off the mobile phone for few mints.HTC 820G+ Remove Pattern Lock.
Hard Reset,Restart Problem,Restart Solution,Restore Factory,
Restore Hard reset will set your phone in origional factorry settings. It will remove all the data and apps that you installed. Your contacts will be removed and you have to add them again.