8820 (AT&T) Wi-Fi Calling - BlackBerryForums.com : Your Number One BlackBerry Community

ejholt · **8820 (AT&T) Wi-Fi Calling -** 03-27-2008, 02:23 AM

Does anyone know how to enable your AT&T 8820 to make phone calls via a Wi-Fi network? i.e. T-Mobile

penguin3107 · 03-27-2008, 05:41 AM

If you want your AT&T 8820 to make UMA phone calls... then you need to unlock it and use it on T-Mobile's network.

AT&T doesn't have UMA.

ejholt · 03-27-2008, 06:11 PM

Do I need the T-Mobile router? I spoke to T-Mobile about this and they said it would cost me $10 / month and I had to get 1 of their routers. Assuming this, I would need a T-Mobile plan. If I unlock the phone, do I need to get a T-Mobile sim or can I use my AT&T sim? Thanks!

John Clark · 03-27-2008, 06:15 PM

Even with the AT&T 8820 unlocked and being used on TMo it won't give you UMA. UMA requires a TMO branded device.

cparekh · 04-03-2008, 11:48 PM

Quote:

Originally Posted by John Clark

Even with the AT&T 8820 unlocked and being used on TMo it won't give you UMA. UMA requires a TMO branded device.

Out of curiosity, why is this? Did AT&T disable the hardware, or does the T-Mobile network understand that the device is not T-Mobile branded? I am guessing there is no hack, because, by reading many of your other posts, you would have given that information. Also there is nothing in the Wiki/FAQ about such a hack.

Oh well.

/cp