iOS 26 Cellular doesn't work after update

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

What did your carrier say when you discussed the issue with them and want your eSIM reprovisioned?

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

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

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

Hi

With iOS26.4 and 26.4.1, i lost the information about cellular connexion.

-> with a physical SIm: no problem

-> With a Esim, problem.

On my iPad 9th generation, i open the Sim tray and the problem disapear until a reboot the device.

Apple sait to me, the iOs26.5 will fixe this problem

wait and see.

What finally worked for me was signing out of my Apple ID, rebooting the phone (did a full reset which is annoying but worked), then signing into WiFi and inputting my Apple ID. Finally back online.

Lockdown mode off.

This worked for me exclusively.

(16 Pro Max, 26.0.1)

so yes, solution, switch your physical sim to the 2nd tray. If you only have one tray, do the rollback to 18. You can find info on YT. If you’re exclusively eSIM, I wish you all the best.

does this mean I lost the ability to use 2 sim? Maybe. I don’t have a 2nd sim to try.

i wld hv stayed on 18, but my watch is 26, and no option to roll back.

[Edited by Moderator]

So drove 50 miles each way to an Apple authorised repairer. Was told my UK 14 Pro Max has a USA 5g modem fitted to so probably a US spec phone. So EU region 26 update hasn’t talked to modem properly. Found a file to downgrade to 18.6.2 but was immediately forced to upgrade to 26 again as part of the install process so I’m back to square one. I’m taking it up with the retailer and in the meantime have ordered a replacement! I love it that Apple just works 😟😟😟

Hello,

This could help restore your mobile data issue but not call failed issue on IPhone 14 Pro Max

1-Switch off the phone.

2-Remove the SIM card while the phone is off

3-Switch on the phone again without connecting to any wifi

insert the SIM card