The Samsung Galaxy S6 selling like hotcakes despite its age. And given that it is approaching its first year anniversary only, those who purchased a subsidized unit from AT&T, Verizon, Sprint or T-Mobile, will still see their device locked for another year.
But that doesn’t mean you can’t unlock the SIM on your Samsung Galaxy S6 for another whole year. In fact if your account is in good standing, you can request the carrier to unlock it. You will need to give a reason however and the most common being you are traveling overseas and will need to swap the SIM on your Samsung Galaxy S6 with a local SIM at your destination.
So to initiate this, you need to dial #06# on your Galaxy S6 to recover your IMEI number. Now make a call to your carrier requesting for a SIM unlock code and give them your IMEI number which they will need to generate the unlock code for you.
Your Samsung Galaxy S6 should get an unlock code within the next 48 hours via email. Enter the code in and you should then be able to swap the SIM to one of your choice on your S6.