How to hard reset Galaxy s3 , Shv E210

How to hard reset your mobile phone if you forget the pin code or any password 

1- remove the battery from your phone and put it back again after 5sec 

2- press and hold vol+ and power key and Home button until you see Samsung logo ,please release only power key

3- you will see a new message and use vol+ and vol- to scroll and power key is OK

4- use vol- to scroll to wipe data reset factory and press power key after scroll to Delete All and press power after you must to reboot your mobile phone by press the power key,I hope this method will work for you 100℅.