If you have an active GSM sim card then just insert it and use the phone.
Samsung Galaxy S3 I747 16GB Unlocked GSM 4G LTE Android Smartphone - Red
Samsung Galaxy S3 i747 AT&T unlocked for all GSM, White , GOOD Condition
Samsung Galaxy S III/SGH-i747 16GB GSM Unlocked LTE Android Smartphone Blue
Samsung Galaxy S3 T999 16GB - BLUE T-MOBILE UNLOCKED Good Condition
Samsung Galaxy Note 5 - 32GB - GSM Unlocked - Clean IMEI - For Parts Only - LCD
Samsung Galaxy Note 9 N960U GSM Unlocked T-Mobile Verizon Boost Mint Straight B-
