Thank you so much!!! I've been having this problem for months since I switched to T-Mobile. I also had this problem whenever I would leave range of the WiFi. This seems to have permanently fixed the issue!! Spread the solution!
Wow, this worked! I've been having this problem for months! The settings you linked did not work for me, however. The following settings, however, worked like a charm:Name: T-MobileAPN: fast.t-mobile.comProxy: Not setPort: Not setUsername: Not setPassword: Not setServer: Not setMMSC: http://mms.msg.eng.t-mobile.com/mms/wapencMultimedia message proxy: Not setMultimedia message port: Not setMCC: 310MNC: 260Authentication type: Not setAPN type: default,supl,mmsAPN protocol: IPv6APN roaming protocol: IPv4Turn APN on/off: APN turned on (this is grayed out)Bearer: UnspecifiedMobile virtual network operator type: NoneMobile virtual network operator value: Not set (this is grayed out)The key, as you say, is to delete the other APN settings completely.
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