Service issue with blackra1n and blacksn0w on 3GS.
I have an iPhone 3GS 16GB, FW 3.1.2 / modem FW 5.11.07. Have been trying for most of the day to unlock the phone. Managed to jailbreak with no problems whatsoever using blackra1n. When I put my T-mobile (UK) sim in the phone, the T-mobile logo comes up fine at the top and I even have three to five bars of reception but whenever I try and make a call, the call drops instantly and I cannot send any SMS.
I have checked my IMEI status and the phone is not blocked, so that can't be the issue. Also tried checking the message and call centre numbers but they are fine.
Does anyone have any advice? I am getting to my wits end with this now!