Did you insert different network SIM to your Samsung GT-S3370 phone and got Network Lock or Phone Freeze screen? Then your phone is network locked and you need to unlock it. You can make it from your home using USB cable that comes with your phone. Watch our latest S3370 unlocking and unfreeze video tutorial now!
Unlocking Samsung GT-S3370 Video Tutorial
Unfreeze Samsung GT-S3370 Video Tutorial