KINDLY ENSURE THE FOLLOWING 

1. IMEIs HAVEN'T BEEN TAMPERED WITH IN ANYWAY THAT MAY TRIGGER ANTI CRACK THIS WILL LEAD TO FAILURE EVEM AFTER UNLOCK SUCCESSFULLY ON OUR END 

2. ENSURE DEVICE HAS NOT BEEN HARD RESET BEFORE SUBMITTING 

3. ALL UNLOCKS ARE FINAL OUR SERVER'S ARE 100% SURE. NO REFUNDS