I am using a Samsung Focus S, which is an AT&T phone but I bought it unlocked on eBay, (from a highly rated seller of course). I am attempting to use it on an AT&T mvno, NET10 (the same company provides Tracfone/Straight Talk). I have a new NET10 sim card as instructed by NET10 and activated it approx. 4 hrs ago, and have inserted it. It makes and receives calls, txts, and can browse the internet and get my email. But It cannot download apps from the marketplace (including the Samsung Zone app "Wireless Manager") nor can I sign into XBOX live or send/receive picture messages. Oddly enough I also cannot use the Bing Search function from pressing the search button, but I can use the Bing website through Internet Explorer on the phone.
Model SAMSUNG SGH-i937
Windows Phone 7.5
Wifi off
Data connection On
APN att.mvno
User Name (left blank)
Password (left blank)
Proxy Server/URL proxy.mvno.tracfone.com (as indicated in the NET10 activation instructions)
Proxy Port 80
The APN settings screen doesnt have spaces for Name, MMSC, MMS Proxy, or MMS Port settings
I have tried changing my Windows Live password, but when I sync it doesnt even ask for the new password, but still works. I put the new password into the email settings just to be sure. I have power cycled my phone mutliple times , and have done a factory reset and put everything in again with no change. I even tried putting "NET10" into the user name field (since there is no "name" field). I don't have WiFi available in my home, but I am in an urban area and can go to a Starbucks or something if necessary. I am in the NET10/AT&T service area, as my family in my area have AT&T and I had a NET10 phone prior to the Samsung Focus S which worked fine. I am able to log into XBOX live on my XBOX 360, and Windows Live/Zune on my PC without issue. I am in the US.
I bought this phone specifically to play XBOX live and I don't understand how that's different from the other data (web access) which is going to the phone. Please help.