DTC Model GT5
PROBLEM : Too Many Pattern Attempt
ACTION : Trying hard reheat este hard reset.done
QUESTION : How to reset?
PROCEDURE :
Press and hold volume down/home/power key
Phone vibrate then android robot appear
Release the 3 buttons and show like this
Volume down to select clear flash then press home to OK
Phone reboot and done..
FINISH 
For reference
thanks for viewing
br