Issues connecting to cellular data on iPhone After Update

Today I updated my iPhone form iOS 16.0 to 17.4. When I opened my phone I found that I was no longer connected to my cellular data. When my wifi is off and my cellular is on, I get popups saying “Cellular Data is Turned Off.” I also keep getting popups to update my carrier settings but when I click update it shows me the popup a second time. Then, it appears again a few minutes later. Something to note is that I am currently on roaming since I am out of my home country.


So far I’ve tried:

  1. restarting my phone
  2. resetting network settings
  3. deleting any vpns in settings
  4. updating my carrier in settings (this did not appear)
  5. manually setting my provider since i’m on roaming
  6. contacting tmobile support (they said ask apple)


Any idea what I could do to fix this issue? Haven’t found anyone on here with the same problem.


[Re-Titled by Moderator]

Posted on Mar 5, 2024 5:21 PM

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Question marked as Top-ranking reply

Posted on Mar 14, 2024 8:12 PM

Ok, listen up:


After the 17.4 update i lost my service or at best it was very spotty. My number couldnt be verified, i wasn't able to receive or make most calls, and my iMessage went to green messages for everyone (even wouldn't send at times). I spent about 6 hours collectively trying to resolve the issue, 5 of those being on the phone with apple support and my carrier and we tried e v e r y t h i n g. Resetting my number, network settings, phone, iMessage, FT, running diagnostics, etc. We even switched me to an eSIM.


FACTORY RESET. I tried this as a last resort on my own before using my refurbished phone warranty to simply replace the device, and boom, everything is fixed. I did choose the “keep eSIM and erase data” option under reset.


Anyways, super frustrating issue and I imagine it can only be due to the update, but yup, save your time and fix it by backing up and resetting.

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138 replies

Apr 15, 2024 5:16 PM in response to lukas1661

I’ve also had the same issue, I updated my phone last Wednesday and my number (calling and texting) and data hasn’t worked since. When I pull up the cellular settings, and under “Send & Receive” my number has a loading symbol next to it but my email works fine. I’ve tried turning off and on just about every setting in my phone. I’ve restarted it about 6 times. I have also been contacting Apple about this issue and they don’t even know what’s wrong with it.

May 10, 2024 4:54 AM in response to lukas1661

Glad I just found this thread. I had a genius diagnose mine in store and the only thing damaged was the sim port. ATT tried different SIM cards and a virtual SIM card earlier in the day with no success. Apple genius admitted that it was them but told me it was $500 to repair it.

This isn’t a warranty issue, it’s a property damage issue.

It turns out none of the support staff or even senior support advisors online at apple nor in store managers have contact info for them. I’m told their attorneys will only speak to other attorneys.

Since I need the hotspot to connect to equipment at work and the cost to repair it in store was the same or more than trading in my inoperable phone to ATT to get a new one, it made sense at the time to take the most affordable and fastest route since I now lost time at work for that day. Only later did I think back that it was completely wrong I had to pay for someone else damaging my phone, who also admitted to it and showed me the evidence. Apple needs to be held responsible and cannot hide their lawyers. I found the local apple registered agent’s contact info and they’ll be receiving a letter from me soon.

Jun 15, 2024 7:31 PM in response to lukas1661

### Comment for Apple and iOS Developers


Critical Network Connectivity Issues on 5G Request for Immediate Resolution


Dear Apple iOS Development Team,


I am writing to bring to your attention a significant issue regarding network connectivity on 5G networks. Users, including myself, are experiencing severe problems with both incoming and outgoing calls. Despite the network occasionally showing full signal strength, the connection intermittently drops, often displaying "No Service."


This inconsistency in network performance is highly disruptive and undermines the reliability expected from Apple devices. It is imperative that this issue be addressed urgently to restore dependable communication services for all users affected.


Please prioritize this matter and provide a prompt fix to ensure seamless connectivity.



Aug 28, 2024 9:07 PM in response to lukas1661

I've just encountered the same problem with iOS 17.6.1 on an iPhone SE (2gen), Telstra SIM. Does anyone know how to fix this, hopefully without wiping the phone and starting again?

I hit the same problem a few months ago after buying a data pack for my British SIM from Three; several Three stores and their Tech department (escalated to the top) didn't manage to get it to work, so they gave me my £10 back. NOT GOOD ENOUGH, APPLE.

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Issues connecting to cellular data on iPhone After Update

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