Unlock your Samsung GT-i9300 S3 III baseband which will allow you to use SIM cards from any carrier without restriction.
This is an Android app download and will require you to use your download directly to your Android phone.
**Disclaimer/Agreement: Always backup your existing Android firmware before attempting to do any upgrades. We are not responsible for any damage, malfunction or phones made unusable as a result of you upgrading or altering the Android firmware yourself from the Android firmware files and tools downloaded on this site. Most Android firmware upgrades do not add any functionality or features to your device, but rather, serve as a "backup" in case your Android device goes dead or experiences any corruption with it's existing firmware.
Download and enjoy!
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