| | 05-27-2013, 02:35 PM #1
I have a Red NOKIA LUMIA 920, and AT&T provided me with the unlock code. But the phone will not bring up the unlock screen when a "foreign" SIM is inserted.
I have unlocked a different (Black) Nokia Lumia 920 before this, and that time I had no problem seeing the unlock screen immediately with a T-Mobile SIM. So this does seem strange. I've seen other report this problem, but no solutions posted.
Here is what I have tried, and what I know is definitely not the problem to save some time on responses:
I tried putting in many different T-Mobile SIM cards, some active on my T-Mobile corporate, multi-line account, and some that are new but not active T-Mobile SIMs. The phone simply won't ask me for the unlock code. The phone boots up with a T-Mobile SIM and shows, for a moment, the Airplane Mode icon, then up comes an icon of a SIM card with a Circle with Diagonal Bar symbol over it. After that, the message in the tile is No Service
I know that the problem is not a bad unlock code -- Yes, I do have the unlock code -- AT&T supplied it to me. But there is no way to enter it. (unless somebody out there knows a keypad entry which will force the unlock screen to appear. And those instructions only appear on the net for earlier Lumias, not for the 920.
Nope, I don't have the original ATT SIM card to insert (I bought this phone on Craigslist), but the Lumia 920 seems to resist taking the ##782# command anyway, saying that command is not in its library.
Yes, I have factory-reset the phone, and the first time I did that, it locked up in the famous gear-lock position. I was able to rescue from that, and re-factory-reset (twice since), each time to completion. All shows as OK in Settings>About. And, no, the reset is not the problem here, because the problem existed before and after.
Yes, the phone does recognize the T-Mobile SIM and in Settings>About it shows the SIM number and the T-Mobile phone number -- almost as if the phone were already unlocked. But the phone says No Service instead of T-Mobile and won't operate.
Yes, the phone will check for updated software and do a number of things when WiFi is on, and I think it is doing these things by communicating with Microsoft (I have an Outlook account set up with WindowsPhone and I have a Nokia account also set up. So the phone almost operates -- it communicates, although I'm not sure with which entity it's communicating to get the updates. But the phone won't ask for the unlock code.
No, the phone IMEI is not blacklisted -- it's a clean IMEI with both T-Mobile and with AT&T. I called each and had the IMEI checked against their blacklist. That doesn't seem to be the problem here.
I know I am not the only person to experience this. The only issue is that nobody seems to know the way to force a Nokia Lumia 920 to bring up the unlock screen.
Is this how a phone would behave if all 10 tries at unlock failed + all 32 tries at PUK SIM unlock failed? Could that have happened before I bought the phone? And if so, would the phone simply never again ask for unlock code?
The phone is under warranty from Nokia, still, and I can send it in -- I think that they will fix it (maybe just with a swap-out for a reconditioned as so often happens -- they just move over the IMEI to keep it the same).
INTERESTING NOTE on this:
There was one time where, briefly, after boot-up with the live T-Mobile SIM: after the Airplane Mode ICON disappeared, I saw T-Mobile appear on the phone tile for a few seconds before the phone went to No Service. So it's almost as if the phone is already unlocked, and checks-in using my T-Mobile active SIM, and then gets an instruction from somewhere to show No Service. Odd. But maybe not helpful to diagnostics
If you've seen this with a Nokia Lumia 920, where the unlock code request screen simply won't appear, please post so it can be solved. If there is a set of keystrokes specific to Red Nokia Lumia 920 which will bring up the unlock screen, please provide these (for all colors, if you have them). This could help a lot of people solve a problem with no posted solution currently on the net anywhere.