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Thu, Dec 4, 2014 7:58 PM
8 years ago
Windows Phone automatically programs the correct data settings during initial setup. However, you will need a compatible SIM card and data plan. If you are still unable to access data services, refer to Windows Phone Support for steps to program your device using the settings below.
the internet as follow
Then you should be able to get online.
7 years ago
Greetings ATT community -
I have a Lumia 640 XL LTE dual sim phone with both SIMs on the ATT network.
Through trial and error over the past week, and several calls to tech support, I've figured out what works for Windows Phone.
The ATT website notes Windows Phone settings here:
However I confirmed through tech support verbally confirming these settings some listed are not correct.
First, the Internet APN should be set by ATT - call them to relay you have Windows Phone.
You can check if correct by clicking "view internet APN" which should have:
IP Type "IPv4" - default is IPv4v6 and what is listed on ATT site which is WRONG
other settings leave blank
For MMS APN - again make sure ATT knows you have Windows Phone on your primary SIM, where you should have no MMS settings. If you have dual sim like me then need to these add MMS settings ONLY to second SIM:
WAP Gateway (URL): "proxy.mobile.att.net"
WAP Gateway port: "80"
MMSC (URL): "http://mmsc.mobile.att.net"
MMSC port: "80" (if you leave blank it will auto-populate as 80)
Maximum MMS size - just leave blank (not 600K)
IP type: "IPv4" - not IPv4v6
I waited a few minutes and sent messages between my two SIM cards and a third phone on Tmobile network. All seemed to work. Next test was reboot phone, checked the 2nd SIM MMS settings were there and tested phone again - all good.
I relayed to ATT tech support the website was incorrect but she did not tell me if would relay to website staff to update - so posted here to help others.
5 years ago
ACE - Sage
You are asking the wrong carrier. If you are bringing a non ATT phone to ATT, you need to program ATT APN settings.
If you are using an ATT phone in another network, then contact them for their APN settings.
Cricket is ATT, no change is needed.
It has to be unllocked and programmed for T-mobile or other carriers
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