iOS 14 no signal, no cellular data

This fixed the issue for me:
Settings --> Cellular --> Cellular Data Option -->Voice & Data --> Select 3G then reboot the phone
No cellular coverage issues since i did this couple of days ago

Using iPhone 8 with Jio sim. NO SERVICE since iOS 13.7 update. Tried everything including iOS 14 update and changed my sim also. Nothing worked. Apple support checked my phone, No Hardware issue found on diagnostic check.
Don't know what to do next.
Advise for others please don't update your phone.

Same issue after updating to 14. iPhone 8. "Mobile data update failed" and I tried all suggestions and nothing works. Apple in its infinite wisdom has decided to turn on auto updates in iOS 14 even if you had it turned off. Phone then proceeds to download new carrier settings which will promptly turn your iPhone into an iPod. Then of course you can't manually trigger an update of the bad mobile data update carrier settings because that option doesn't exist in iOS 14. And if that wasn't enough, they renamed all pertinent settings! "Carrier" is gone, so you can't follow the instructions of people who have solved the issue before.

And now....silence from Cupertino.

Way to go, Apple! Definitely worth paying almost $1k. Keep fixing what's not broken and breaking what works well, because "innovation".

I have the same issue. Since updating my iPhone X to iOS 14, the cellular connection goes to "no connection" about every hour, and requires a hard reset. I've gone through every troubleshooting step including rebuilding my phone twice, to no avail. I guess I'll wait for Apple to figure out where QA dropped the ball and actually fix the underlying problem. Oh, and the next Apple Store appointment is too far in the future to schedule....whatever that means.

Same issue, any news to fix this issue it is a big headache to keep checking for signals and restart to fix.

Hope apple notice this thread to solve it.

Same issue with iPhone XS Max. Called my carrier to see if that was the issue, but it wasn’t. I even switched SIM cards and the phone was still having on and off cellular. Seems like there needs to be another software update and it needs to happen fast.

Same problem here. The moment I get away from my house, I have "LTE" on my XS Max with T-mobile. To be fair, where I am, T-Mobile isn't that strong but even when I have 3 bars, absolutely no data in or out. Now regretting updating... and I also second the beef about the auto carrier update. Apple seems to be fixing things till they ARE broken.

I now have a very expensive iPod...

Same issue here. I have Max and I Did the reset of all kind and even changed the hardware IC, and the SIM with no success. The Disconnect happens indoor mostly when the 4g single is weak and phone is trying to switch to 3g, it fails and then the network dump the phone out of the grid for some unknown glitch in the phone settings that occur during the switch process.

What a shame apple for failing such a basic phone function. We need a fix asap.

Same issue here:

Iphone 6S
Network: Movistar (Spain)

Worked perfectly well on Ios 14.0 ... one night after restart, started looking for network signal and not found. The message displayed is that it needs an update.

Tried update over Wifi and said 14.0.1 was available. I downloaded the package but.... "Update could not be verified because it was not connected to Internet" _(WTF... meanwhile whatsapp and imessages were entering the phone).

I connected it to the desktop.... downloaded 14.0.1 through Itunes, installed it, no issue.... iphone reboots.... same error message. Mobile network (Error) - Your mobile needs an update.

Now it displays "Your Iphone is up to date with Ios 14.0.1"

Changed SIMs to see if there was a bit more luck ... same behaviour .... the iphone does not even asks to unlock the SIM after restart. Only asks for code and with no SIM unlock, stays looking for network signal. I think some developed f*up on the process calls to unlock SIM cards.

---

Until the guys do not issue a new package 14.0.2 ... I guess we have just a very expensive brick on our desks that can not make calls.

This is extremely frustrating! I have No Service on my phone 95% of the time. I have tried all the suggestions and nothing works! Come on Apple step up to the plate!.

Iphone XS MAX
STC KSA
SAUDI ARABIA

Well, what a shame! I use a normal sim and E-sim both together one is for data and one is for calling, I had issues with having to use airplane mode on and switched off and just go with it, but after updating 14.0.1 The service just disappears!!!! I have to reboot my phone twice a day and it just goes without any reason, I have full signal, all my friends have the same model of phone face the same issue, come on apple step it up, signal issue? are we back to 2009? waiting for 14.0.2 to solve this issue ASAP...

i report the same issues, I tried to switch celular data and any app don’t works!

Hi! i made this account to share my successes after my XR updated to IOS 14, i disabled the voLTE under Settings > Cellular > Cellular Data Options > Voice and Data and my LTE works great! maybe this will help others?

I have the same issue, started with intermittent no signal. Had to restore it 3 times with itunes before signal gets back. Was good for about 20minutes and now no connection at all. I thing i’ll try installing ios 14 beta2 maybe i’ll help

Hi,
Same issue with iphone XR under 14.0.1

Cellular data not working at all, or working 1 second every 5min. Impossible to use the phone. 

Checked with another SIM card, but I have the same problem.
After multiple restorations/network reset, nothing change.



Impossible to get back iOS13 which was working perfectly... waiting for the next update.