How wipe a samsung gt s5301 without password?

— To recover the backup PIN, press the Power button and activate Data connection,...

— If you cannot install this application in your phone it means that the phone is...

— The backup pin is the number you have set yourself. There is no default PIN...

— The only way you could remove the account is through factory reset. If you...

— To be able to use the Gmail account, press the Power button for a few seconds ...

— To delete your Samsung Account: Go to http://account.samsung.com and tap Sign...