How to enter Unlock Code into a Samsung Galaxy S6 EDGE. Method #1. If your Galaxy S6 EDGE phone does not ask for the unlock code: 1. Turn on the phone with a non-accepted sim card (from a different carrier than the phone's original one).ethod #2. If your Galaxy S6 EDGE phone does not ask for the unlock code: 1. Turn on the phone with original Sim card or without Sim card. 2. Enter #7465625*638*NCK/Network#. The phone will then be unlocked.