Level 1

55 points

Cellular network off after 17.4.1 update

Last night I updated to the most recent version, 17.4.1, and today my cellular network suddenly dropped and quit working. I tried everything I could think of, restarting, turning airplane mode on for a bit and back off, etc. nothing. So I called my carrier, AT&T and two different people could not figure out why my phone wouldn’t work.

I figure it was the update. Now when I go into general in settings and about, I get the pop up that I need to update my carrier settings but when I click update, it closes the window and does nothing. I NEED my phone for work and I’m getting nowhere. I’m hoping someone else has this issue or at least Apple knows what they messed up and will release a fix soon because I need to be able to make calls and right now my phone makes no calls unless it’s through Facebook messenger over WiFi.

Help!? Anyone?

iPhone 14 Plus

Posted on Apr 7, 2024 7:28 PM

Top-ranking reply

airo_es

Level 1

8 points

Posted on May 17, 2024 3:55 PM

I have two iPhones — the 12 Pro and the 14. Around the same time, both devices stopped working with eSIM on firmware version 17.4.1, with a two-week difference between them. I tried all the usual troubleshooting steps:

Restarting the phone
Turning airplane mode on and off for 15 seconds
Resetting network settings
Performing a full reset with data erasure

In both cases, the reset with data erasure led to complete mobile service failure, affecting both physical SIM and eSIM.

For the iPhone 14, updating to version 17.5 through restore from 17.4.1 solved the problem. However, for the iPhone 12 Pro, updating to 17.5 only worsened the situation. I tried everything possible, contacted Apple Support, and followed all their recommended steps. I also visited the Apple Genius Bar and explained what had been done. Their only suggestions were:

Replace the motherboard (costing €550)
Trade in the phone and buy a new one

Ultimately, what worked for the iPhone 12 Pro was the following:

I downloaded the previous firmware version 17.4.1 from ipsw.me and flashed the phone using that firmware.
The only useful advice from the Apple Genius Bar was to flash the phone in recovery mode. To do this, you connect the phone to a computer with a cable, press the volume up and down buttons sequentially, and then hold the power button until the phone enters recovery mode (about 25 seconds). After this, hold the option key and select Restore, choosing the downloaded firmware.

After flashing to the previous firmware, the eSIM reappeared. I then updated to the latest firmware and was able to restore the phone from a backup.

My opinion of Apple has significantly deteriorated after this incident.

View in context

Similar questions

77 replies

Apr 11, 2024 5:50 AM in response to mom4max

That’s what I’m saying I have ESIM and idk if I should go back to a physical SIM card to see if that works

SravanKrA

Level 10

448,010 points

Apr 8, 2024 12:16 AM in response to Megandia

It's not always the iOS update's fault! Many things can cause phone problems. If you tell people you think it's an iOS update, it might make it harder to fix or find a solution for the real issue.

Remember, the right question often leads to the solution!

iOS updates aim to enhance user experience, boost security, and fix bugs rather than disrupt core features. The majority of the issues after updates might stem from underlying, unmentioned factors. Updates won't typically alter personal data but may refine settings or features. Backup before major updates for safety. Review Apple's update details and backup advice for a smooth process.

Kindly consider checking your settings and addressing any device issues before attributing the issue to external factors. This could be a pure coincidence that the iOS update affected the iPhone functions.

Before initiating a standard iOS update, it's advisable to create a backup. Have you completed this step? If yes, proceed with the restoration from the backup.

See what each update does: About iOS 17 Updates, About iOS 16 Updates, About iOS 15 Updates, About iOS 14 Updates, About iOS 13 Updates, About iOS 12 Updates, and so on...

SravanKrA

Level 10

448,010 points

Apr 8, 2024 12:22 AM in response to Megandia

It surely is not iOS 17.4.1 because...

I conducted a thorough search of this forum using the term 'Cellular network after iOS' and uncovered numerous posts detailing similar issues across various iOS updates. This suggests that iOS updates may not consistently be the root cause. Below are a handful of examples extracted from over 6,000 search results:

"After iOS 17.4.1" will be an addition to this list posted by you.

Apr 9, 2024 2:09 PM in response to SravanKrA

Sadly this situation may be the IOS update fault.

hundreds of people are having the same issue, and unfortunately it is all pointing towards the IOS. Telling people it’s not that can also make it harder for them

to seek resolution- as if they are like me and having this issue - cannot find any resolution.

some of us don’t have access to a backup and some updated overnight without expecting any issues

Apr 9, 2024 3:32 PM in response to Megandia

We support several Private LTE (Band 48) networks and with new iPad 6 Mini’s deployed with factory installed 17.4 iOS, devices connect to the private cellular network, network system admin can see that devices are connected successfully, though, any App attempting to access the internet, receives a “Not Connected to Internet” error. Updating an iPhone 13 Pro from 16.6 code (working on network) to 17.4.1 code creates the connectivity issues. AT&T connectivity works without issues, just Private LTE (Band 48) on this end.

Apr 11, 2024 8:56 AM in response to Megandia

I am also having this same issue after updating to 17.4.1. I am on ATT and now am unable to connect to the cellular network. This is definitely an issue with the software update. I have an iPhone 13 Pro.

Apr 13, 2024 8:58 AM in response to Megandia

I am also facing the issue in my I phone.. before this update I was facing contact search related issue but after this upgrade that got fixed but new big problem occurred. I can not use my mobile network.. no internet even calling also got ruined.. please send another update as soon as possible

Apr 16, 2024 12:48 AM in response to SravanKrA

You did “a search” and that concluded it’s not an iOS issue? Stop misleading people. It clearly issue given the volume of reports. I have an esim and physical sim and both have the issue, my partner who has the same phone using a third carrier also had the issue, all happened post update.

SDAV1

Level 1

12 points

Apr 18, 2024 8:58 AM in response to Megandia

Hi following update cellular no longer working but the phone can still make and receive calls. Is this the situation with you. Perhaps using the revised update by linking the iPhone to the Mac will solve this issue?

Apr 28, 2024 10:53 AM in response to Megandia

Happened to my iphone12 I'm using Spectrum mobile and was on the phone with spectrum support for over an hour and could not resolve the issue. Went to the local store and got a new sim card and didn't help I had to get a new sim card and put it in a iphone 8 to be able to have a phone that works

Apr 30, 2024 4:08 AM in response to Megandia

This happened to my iPad Pro 11-inch 1st gen. I have a physical SIM card on my iPad. I use mobile data rarely as I'm always on Wifi at home and in the office. However, recently I turned my iPad on and tried to use the internet using mobile data. iPad did not connect to mobile data, however. Tried to disable and enable mobile data, reboot the iPad, reset network settings etc., but still the mobile data won't connect. I can't see my network provider in the system - > General --> about. The network provider shows as iPad 58.0. System --> Mobile data shows up to purchase a new data plan. Data plans from my country is not available. Available data plans are GigSky & RedTeaGo. This is quite surprising as I lost the data and I'm very sure it is post 17.x update.

My physical sim card is working fine on another phone/tablet. I got the sim card checked with my network provider and confirmed all is good.

Only option left to try is e-sim.

Mpssss

Level 1

8 points

May 7, 2024 1:12 PM in response to Megandia

As I am writing this I am on the phone with Apple. They don’t know what’s going on. The exact same thing happens to me no service, carrier update shows up but nothing happened. Tried bunch of things nothing worked. Called tmobile telling me nothing is wrong with the service. It might be the IOS update

Apr 14, 2024 11:32 AM in response to Megandia

Turn off your network and turn it back on again. It’s a minor fix because it won’t last long.

May 12, 2024 8:15 AM in response to Megandia

I have been facing lots of cellular issues after updating to ios 17.4.1, call gets dropped frequently

Megandia Author

Level 1

55 points

Apr 8, 2024 11:39 AM in response to SravanKrA

That was the ONLY thing I did differently. I even tried to reupdate it through my computer and I'm still having the same issue. I have no backup so I can't restore it so I am stuck with a brick until it's fixed. I'm thinking the carrier settings need to be updated but it refuses to update no matter how many ways I try and click update. I believe it to be the iOS because like I said that was literally the ONLY thing I did differently.

Is there anyway to manually update the carrier settings like you can do iOS updates through itunes? I've tried everything I can think of and it just won't. I depend on my phone for so many things and this is crippling me. I have only very small windows to take it to a store to fix so that is currently not an option anymore this week.

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Cellular network off after 17.4.1 update