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Level 1

41 points

Can't activate cellular data network

Recently I've been getting messages on my iPhone 5c saying "can't activate cellular data network," "turn on cellular data," "turn on wi-fi," "cannot get mail," "the mail server imap.mail.att.net is not responding," "verify that you have entered the correct account info" even though I have a strong cellular connection and wi-fi is turned on.

I was out of the country recently, and switched sim cards while I was away. I may be mistaken, but I don't believe I had this problem before doing so.

Thanks,

iPhone 5c, iOS 9.0.1

Posted on Sep 27, 2015 6:34 AM

Best reply

Demo

Level 10

166,500 points

Posted on Sep 27, 2015 7:30 AM

Even though you are getting these messages, does the phone function as it should? Cellular data is working, email is OK, you can connect to the Internet? If all of those things do work, it might be related to having changed SIMS, but having never done that myself, I can't say for sure. I can say that there have been some weird things going on with Apple servers over the last week or so - at least from what I have exerienced.

I don't know if you have tried this, but it doesn't hurt anything and it sort of "clears the cobwebs" and it might get rid of the messages that you are getting. Force restart your phone. Hold down on the sleep and home buttons at the same time for about 10 seconds until the Apple logo appears on the screen.

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16 replies

EricWeir Author

Level 1

41 points

Oct 14, 2015 4:44 AM in response to Demo

Thanks, Demo. Sorry about the medical issues. Hope the situation is improving. But relieved to be assured that I haven't been hacked. Weird not only that it occurs but that it's so difficult to get a handle on it.

Take care,

Eric

Can't activate cellular data network