How do I unlock my Galaxy s4 if I forgot my password?
What is the unlock code for Samsung Galaxy s4?
What is the master unlock code for Samsung phones?
Enter 00000000 (eight zeros), the message will come up Sim lock disabled with a check mark; your phone is now unlocked to use with other carriers.
Can a Galaxy s4 be unlocked?
There are a number of different places you can go to get an unlock code, both on- and offline, that can generate a code for you once they have your phone model number, original carrier, and IMEI number in hand. When you put in a SIM card from your new carrier, you should be prompted for an unlock code.