Will 521 work on ATT with wifi calling?

Question

I currently have the 520 using Consumer Cellular which limits voice minutes.  It appears to me that a key difference between the 520 (ATT) and 521 (T-Mobile) is that the 521 has wifi calling.  So my question is:  Is there a way to use a 521's wifi calling on a non T-Mobile provider?
Thank you,
Pete
Solved!
Go to Solution.

Answer 1

the 520 has:
WCDMA network: 850 MHz, 900 MHz, 1900 MHz, 2100 MHz.
.WCDMA max data speed DL: HSDPA - 21.1 Mbps .
.WCDMA max data speed UL: HSUPA - 5.76 Mbps .
.GSM network: 850 MHz, 900 MHz, 1800 MHz, 1900 MHz.
.GSM max data speed DL: EGPRS 236.8 kbps .
.GSM max data speed UL: EGPRS 236.8 kbps .
the 521 has:
WCDMA network: 850 MHz, 1900 MHz, 1700 - 2100 MHz.
.WCDMA max data speed DL: HSDPA - 21.1 Mbps .
.WCDMA max data speed UL: HSUPA - 5.76 Mbps .
.GSM network: 850 MHz, 900 MHz, 1800 MHz, 1900 MHz.
.GSM max data speed DL: EGPRS 236.8 kbps .
.GSM max data speed UL: EGPRS 236.8 kbps .
in order for you to be able to use it on the ATT network, you would have to unlock the device.
that could cost you almost as much as the device is, unless you can get the unlock from Tmobile.
then, while the device will get general 2/2.5G service for phone and text, your data, being that it is missing the 1900mhz, will not get sufficient data.
the real difference between them is the wifi calling and the 1700/1900, which is what really separates the two device and why they are made specifically for each carrier.
being the cost of the devices, I would just buy another one for the ATT. wifi calling is not going to work anyhow, as that is a tmobile product that connects to your account on wifi, which att doesn't have.