HTC Explorer PJ03120 Hard Reset With Keys
https://gsmfixer.blogspot.com/2015/07/htc-explorer-pj03120-hard-reset-with.html
If you have forgotten you pattern lock on HTC Explorer PJ03120 and you tried too many wrong pattern then you can remove the pattern lock the following method.
- Power off phone.
- Press and hold Volume Down and Power keys together.
- Release these keys when android logo appear.
- With volume down key select Factory Reset option from menu and press power key to confirm.
Note:- Take backup of all important data like contacts, messages, installed apps and games because this will remove all data on phone memory.