cannot connect to cellular after ios 17.6 update

Okay, I just chatted with Apple Support and they helped me fix it. I had to reset my network settings.

1. Open Settings 
2. Tap General 
3. Tap Transfer or Reset [Device] 
4. Tap Reset 
5. Tap Reset Network Settings 
6.  Enter phone passcode if prompted.

This worked for me immediately!

The problem is fixed with help from Apple. We did a restore to fabric settings and after we checked that network was back we restored from the cloud (not from computer)

Thanks, (of course we had to reset the network settings and thus a loss of paswords for wifi... and some apps because it thought that we had a new phone)

Same thing happened to my 11 Pro, I went to 2 certified Apple service centres including the Apple Store and they said my cellular service will never work because of a firmware issue after the update. Wifi works fine but my only option is to replace the phone and apple won’t do anything other than give me the standard trade in value. Very frustrating considering all I did was update my phone. Seems like they should at least offer something because they permanently damaged my phone.

Had the same issue as reported with carrier details empty.

General settings > Mobile > Mobile data network > reset settings

then restart your phone, will take a few minutes to connect to your mobile network

I encountered the same issue after updating to iOS 17.6.1—my mobile data stopped working. I noticed that the APN settings were missing, and I needed to update them along with the carrier settings. I visited the carrier’s website where they provided the necessary APN configuration. After updating the APN settings, the issue was resolved.

I’m experiencing the same issue on an iPhone 14 Pro with iOS 17.6. After playing with the Cellular Data Options, I found it seems to work better if I turn on Data Roaming with 5G or LTE with or without Roaming. When I switch back to 5G without Data Roaming to problem comes back.

All 3 phones in our house, auto updated last night to 17.6.1 and this morning none of us has cell connection. It says SOS in the corner of all 3 phones. Clearly a huge issue with the update.

Apple chat support, said they said they had to escalate this issue to their senior advisors but that they could only *call* me. SERIOUSLY? Apple broke all three of our phone-call-making-devices and they only way they can contact me is through a phone call? What planet is this????? They asked if I had a landline.

I'm out of luck.

Apple fix your issues.

That's indicative of a carrier issue; you may want to contact them for further assistance.

The same thing just happened to my mom and Brother ‘s phone. They both have brand new iPhone 15 Pro Max & had their phone auto update to 17.6.1. Now both are stuck in SOS mode and only work on Wi-fi. This issue started on Thursday, my mom has been at the T-Mobile store basically all weekend and T-Mobile is saying that it’s an issue with Apple, Apple is saying that it’s an issue with T-Mobile and nobody that we contact is doing anything to resolve the issue. she even tried just asking to return the device and get a new one, but T-Mobile said they only return items up to 14 days and she got the devices 19 days ago… I got an iPhone 15 Pro the same day but don’t have automatic updates on and I as of right now still have my service. So I don’t know if it is the update or what but they got to get it figured out. This is crazy.

Upgraded an iPhone 11 to 17.6.1 and the mobile connection went straight away

so contacted Apple via the online help app. They ran a remote diagnostics and booked me into an iPhone store to help. The istore guy just said, you need a new phone!

so are apple now sending an update to break your phone to make you buy another one? Not sure what to do. Such a big company doubt anyone in their customer service really cares if a few phones don’t work anymore.

since I have upgraded to 17.6 last night, I am having issue where my 13 mini isn’t detecting sim/singals. WiFi is working.

Since update to 17.6 I have the same issue, no mobile network. error is, Problem with your network. even after cold restart no mobile network. Wifi is working.

Same with my iPhone 12. I cannot connect to anything except through WiFi. It doesn't even detect that a network exists.

Same as me. I only use esim now.