Issues connecting to cellular data on iPhone After Update

Today I found my network just stopped working. No message, no warning - just no cellular network. Come on Apple - how can an IOS update lose focus of the very basic needs of a mobile phone…. No excuse. Please sort this out asap. It had a massive impact on my work day! 🤯

⚠️ I found a solution. ⚠️

All you need to do is select the 2G/3G option and avoid using 4G or LTE. Go to Settings > Mobile Service > select your eSIM from the SIMs list > Voice & Data > select 2G or 3G (if possible).

I believe the main issue lies with the 4G/5G network settings in iOS. I hope this will be helpful.

I am using iPhone 13 and I just updated from IOS 17.3 to 17.4 and my cellular works for a while then stopped, even though my phone show mobile signal is full and 4G icon is there. Try to restart and also reset my network setting to no success. By the way, my wifi is working fine.

Really frustrating when I need to use it outside my home.

I'm not getting that alert, but since updating to 17.4 I'm not able to make or receive calls. All outgoing calls fail.

Also, my phone number won't authenticate with iMessage--there's just a spinning waiting symbol next to it. These two things might be related, but I've tried all the same things as you above. It's driving me crazy. I need a working phone for my job.

I also updated my iPhone today and got the same exact problem. It’s just pretty frustrating and leaves me disappointed. I always was excited for the new updates and features. But stuff like this just ruins it for me.

Same thing I’m going through . Spent 1 hour with ATT , then another hour with Apple. Now my phone is getting backed up so we can try to reset to factory settings :/ . I’ll keep updating if I find something that works

So to recap, after updating to 17.4 I had issues with iMessage on 2 different sims (same network) phone calls not being received, personal hotspot not showing as an option and 4g not working, only LTE and 5g. I’m not able to use internet while on a phone call either.

After contacting both Apple and my carrier (EE in the uk) twice, I can confirm my issue is iOS/phone related, Apple engineers called me up today after a week of investigation, they refused to acknowledge it’s because of 17.4 and asked me to go to my carrier and ask them questions and investigate. After I called EE up and confirmed everything was working ok, I decided to put my physical sim (same network) into another iPhone logged into my account, straight away it worked perfectly, iMessage worked, personal hotspot showed up again and I was able to get 4g, calls everything.

conclusion, I’m having to transfer my eSIM to another phone temp until there’s an update on apples side. I’ve gone back to the Apple engineers to let them know, so will update when they get back to me, I’ve done all the troubleshooting they’ve asked me to do now so they can’t deny it’s not a problem anymore.

Same as well as IMessage and FaceTime not activating

Same issues, updated software to 17.4.1 .. No cellular data. Went to carrier they try inserted a new E sim card and could not they, then they replaced physical Simm card with a new one and phone still did not have cellular data. Then went to Apple store they did full diagnostic on phone twice, then rebooted phone twice and, was told there nothing wrong with phone, but still had not cellular data, and it was a carrier issue. Not the case. It is defiantly software issue with Apple. I switched from android user to apple user in January 2024 and so far, not impress with support. in future will not be supporting Apple platform and products, going back to android.

I have exactly the same problem in my 14pro

I spent several days and no success. Factory reset doesn't help, even without backup restore - clean phone just ignoring sim. Reset through mac & IPSW also have no result.

This is unacceptable. Such big corporation sells premium products and cannot test software on basic phone functionality before releasing update. In modern world sim is a 2FA mechanism - I cannot use other services and bank accounts, shame on you Apple

Especially ridiculous that it is not possible to downgrade to previous version, even using IPSW - Apple just stop signing and supporting update from a MONTH AGO

To fix: I reinstalled iOS on my phone via my computer after backing up all my data. My cellular data works fine now and I can make outgoing calls as well. I'm not sure if it would work by resetting from phone settings.

I tried removing sim, resetting network settings, restarting my phone before restoring via computer.

Updated to iOS 17.4 on March 8th. No issues at all on March 9th, but today (March 10th) keep getting a popup that says "SIM Failure".

Troubleshooting I've tried so far that hasn't worked.

•Restarted iPhone

•Reset All Settings

•Reset Network Settings

•Factory reset from March 6th backup.

•Removed SIM card multiple times

•Tried eSIM and same thing

Verizon is telling me this is an iOS issue and has nothing to do with the carriers. This is absolutely ridiculous!

I'm having the same issue, this is unacceptable!!!! Same thing happened with the previous update, even resetting the phone didn't fix the issue, only after 10x restarts of the phone it just randomly started working. Now I'm having the same issue. Maybe instead of laying off engineers fix your product you useless management parasites

t's crazy that people can't use their unnecessarily overpriced phone and they issue a junk update!!!! It's okay to not have a network!!! There are so many emojis! That's important!! The fact that the $2,000 phone is just a paperweight is not a problem for the engineers!!??