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Unlocking my Samsung Galaxy S3
Hello, I have received an unlock code from ATT for my S3 with the following very sparse instructions:
To unlock your device, simply:
1. Power off the device and remove the SIM card.
2. Power on the device.
3. Enter #0111*, the unlock code, and #. The device powers off and back on.
There seems to be a step or two missing. Steps 1 and 2 completed, no details on how to enter unlock mode. Does the phone require a non-ATT SIM card to be inserted first to put it into the right entry mode? My phone just boots up to its normal screen, and it is not clear how to get into a mode that will accept numeric inputs. Entering from the phone dialing keypad does not work.
Thanks in advance!