Just got my phone yesterday and I noticed while home on Wi-Fi the 4g symbol would occasionally pop up and then disappear but only used like 4 megs of data so wasn't worried about it. This morning I installed the ATT update which could be a coincidence but want to mention. Today my 4g I'd on all the time even while connected to Wi-Fi and it's definitely using it because I have gone up to 107 megs of usage. The symbol shows its being used when I go into apps like Instagram. Wi-Fi is fully functional because if I turn mobile data off it uses it fine, but if I turn it off I can't get MMS. Anyone else having this?? It's really making me mad!!
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