iOS 26 Cellular doesn't work after update

Having the same issue. I brought my phone to a local phone repair shop and they reverted it back to ios18 and the cellular works fine again now. Definitely something up with iphone14s and the latest update. It happened when I did the beta update a couple weeks back and the. Happened again today when i did the public ios26 update. Back to the phone shop I go again.

I flipped the sim from the top to the bottom of the sim tray and it worked. Got this from Reddit

After flipping my sim to the other side of the tray, it worked for me, my model is 14 pro max

Yes! Had cellular issues too after ios26 update. I was so happy ios26.0.1 fixed the bug!

SIMS can go bad/defective for many reasons. Most cellular providers will replace SIMS for free. AT&T, T-Mobile and Verizon all provide SIMS at no charge where I live (Florida).

The fact two other SIMS work in your iPhone indicates your SIM is defective. The SIM may be too old to work with the newer device or newer iOS .

Cellular providers install their own software and firmware. If it hasn’t been updated, that’s not Apple’s fault. A simple visit to the provider store or service locations should resolve your issue.

Following my earlier post requiring assistance with failure of the cellular module on my iPhone 15 immediately after IOS 26.1 update.

Having tried the majority of recommended solutions found on this forum, I took my 19month old phone to my local Apple store. I was expecting bad news and clinging to a hope that there may be some value in trading up to the latest model.

Having explained the issues to staff, I was informed that, because I purchased my phone directly from Apple, I had a 2 year warranty on the cellular components and the repair was going to be without charge to me.

Repair done and phone now fully restored and working perfectly!

I’m very grateful to Apple but still puzzled as to why there’s nothing official online about this issue.

Yes! Buying and inserting the dual sim tray worked. I was able to fit my sim onto the other side and it restored service.

it worked for me after toggling Airplane Mode on and then off. Thanks!

FWIW…I went to Apple Store in Short Hills after 3 days of **** and they wanted me to wait 3 days for an appointment. Long story short, they did some type of return and gave me a new 17 pro and it’s worked perfectly ever since.

Resetting network settings fixes this

I had the same problem but I fixed it by switching the Roaming data on and service (4G) sign appeared immediately after going days without having service.

MNtoBdx23 wrote:

I had the exact same problems, did everything people recommended, nothing worked…until I flipped the sim to the other side of the tray and problem solved! I’ve got an iPhone 14

You must have a chinese market phone?

Guys i may have found the solution for this problem , you need to turn lockdown mode off , you can check it via - privacy and security, lockdown mode

Downgrading back to iOS 18 worked for me, I’m having the same issue on my 14 pro max and from what I’ve read online I’m not the only one. I don’t think it’s a hardware issue, if it is hardware it affects a lot of 14 pro and pro max users which is dumb

i didt know before that my iphone 14 pro can support 2 sim card. It solve my cellular network issue after i put my simcard at the other side. Hope all can try