Released on September 19, 2014, this 4.7" screen iPhone is the smaller version of the iPhone 6 Plus.

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No service with ATT on iOS 9.3.1 or 9.3.5

Hey folks, I'm at the end of my rope and could use some outside help. I have an iPhone 6 which will not maintain service with ATT. Here's what I've tried so far:

Update carrier... stuff - No change

Roll back carrier stuff - No change

Reset network settings - First time, worked for 5 minutes then no service. No change when repeated.

Reset all settings - First time, worked for 5 minutes, then no service. No change when repeated.

Switch SIM card with working phone - SIM works in other phone, other phone's SIM does not work in this phone

Update iOS to 9.3.5 from 9.3.1 - No change

Reattempt above - No change

Restore from backup - No change

Restore as new phone - No change

Banging it - No change

Disassemble phone, ensure all connections are maintained - first time, worked for 5 minutes, then no service. No change when repeated.

Reattempt above

Replace wifi ribbon cable - First time, worked for 10 minutes, then no service. No change when repeated

Reattempt above

So, at this point, I'm not sure what components could be on the fritz or what underlying problem could exist. Is there another antenna chip or cable worth investigating? Thanks!

Answered! View the answer I have this problem too

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@lpfaff1 Appreciate it. I did try this before without effect. I couldn't recall all the strange sequences I found on random forums, though they're surprisingly popular.


Is this still an issue? If not, how did you solve it?

Out of curiosity, are you connected to WiFi? iOS 9.3.x introduced WiFi calling for AT&T. Can you make a call when connected to it?


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You may have tried this already, found this info. on a forum.

from settings turn cellular (mobile) data off.

Turn Airplane mode on, power off phone, wait about a minute, power phone on, turn airplane mode off, turn cellular data on.

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Mitch Connor will be eternally grateful.
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