iOS 14 no signal, no cellular data

I've installed iOS 14.5.1 on my iPhone 8 plus and since then, I lost the signal and I don't have data. I have an Android phone, and my sim card works well with it. 

I tried many things like:
Turn off/on cellular data
Turn off/on airplane mode
Turn off/on roaming
Hard reboot
Soft reboot 
Reset network setting 
Reset all settings
Erase all contents and settings

...
Same issues

Do you have any idea how to fix it?

iPhone7 iOS 14.5.1.
Since updating to iOS 14 my phone has annoying things as well.
I thought that my phone is damaged but found this thread.
Hope there's new firmware update soon.

• Calls: Voice or any OTT apps

Calls-in or Calls-out: Connected but cannot hear any sound or talk
, some times i can hear crackling radio sounds
,when press Volume Up/Down it takes a while to apply and show volume icon on the screen, looks like the phone is checking something
,nothing you can do with speaker phone
,some said that you can make calls using bluetooth device but it's not my case, bluetooth headset does not help.
,Voice Memo app cannot record any sound, press Record button then app auto stop recording and save a record of 00:00 length.
> Restart phone may help some times but it happens all over again
> Reset with Volume Down + Power does not help as well
> Erase Alls. I'm backing up ~80GB of photo data then i will try to erase and reset all to see if it solve the problem.

• Camera: cannot capture Pictures or Videos

, there's a flickering as if phone is already captured the picture but then no picture was saved.
, some times can take picture but you cannot focus
> Reset phone could help but then it happen again and again.
It's really mad when you need to capture something and the phone is malfunction.

• Phone is really hot when using.

,Battery drain fast when using Wi-Fi or LTE the same, especially when connecting using VPN
> I disabled: 'Wi-Fi Assist' (Settings > Cellular > at the end of App list > Wi-Fi Assist)
, which means telling the phone that when i'm on Wifi don't try to use LTE to improve connection or anything
, i feel it has some improvement

iPhone X iOS 14.6

Lost signal frequently and never have it back automatically. Have to turn on air mode many times, or restart the device to have the signal back.

Updated to 14.6 and now nothing works on my phone at ALL, I can only use WiFi. Does anyone have a fix for this?? I’m soo irritated.

I have the same issue with iPhone XS 14.6 , it worked fine on IOS 14.6 for some time but as of last 2 days , i have no signal whatsoever on my primary (physical sim). However on my eSim with different carrier , it works fine.

The physical sim works fine on an android device.

On the physical sim majority of the time its either searching or "no service"

and say 1% of the time i get the carrier name showing up with no bar , but would go back to "no service" again

So heres what I noticed after 10 months of dealing with this issue- IF there is a wifi present- the phone automatically switches to wifi, normal occurrence. THEN I lose all cellular data. I RARELY see that both exist. So for the last week- I reset my network settings and am solely using cellular, it went out ONCE for 3 seconds and came back. Fix this APPLE!

Same issue here. IPhone 12 Pro. Have been working without issues until IOS 14.4. Now I only get 3G signal where I live. Switching to my android phone gives me 4G without any issues so there's definitely something going on with the IOS update.

No change going to latest 14.6.

[PLEASE READ THIS CAREFULLY!!!! IF U OWN IPHONE 11, 11 PR, 11 PRO MAX, XR

Hi guys, I have be researching about this issue for a month now and I have had the same issues with my iPhone 11 Pro and due to my phone just being 2 months after expired date, I will need to pay RS 60,000 which is almost $850 more than 3/4 of the amount I paid for my phone, its is disastrous paying this amount in just a year, I request you to call apple support buy finding your country's number on this (https://support.apple.com/en-in/HT201232) and tell them about this issue which is mostly happening in iPhone 11, 11 pro, 11 pro max and Xr mostly, clearly tell them this issues has manufacturing issues which is arising and we need a solution the more people will call the chances are higher for us to get our phones replaced, Tell them you know many people through apple forum having the same issue, only we can help ourselves, please like this comment for high reach

Same issue iPhone 12 Pro Max stated 2 hours ago when not on WiFi I cannot access the internet it’s as if the phone is not provisioned for mobile data toggling All promise didn’t work, just happened out the blue. IOS Beta 14.7 calls text work but no internet with 5G on/off auto LTE.

I’m also in the same boat and it’s driving me mad! I have carried out a full factory reset, had a new SIM card from my provider and no change, I have missed so many important calls! Is there any fix yet @apple?!

The same issue is currently happening to me, I have a temporary solution.I walk with a pin and and each time I loose the network I just open the sim slot and close it immediately and that will work for some few hours then I loose it again. It must the new IOS and I hope apple will fix this as soon as possible

Same on SE 2020. I have also suffering same problem last 2-months.
Hope Apple will solve this issue ASAP.

Dang. I kinda cannot believe how many people are dealing with this issue. I have the same thing here. I have an iPhone 7 and it has been working great.

I got a notice that I needed to update my iOS software or the carrier settings would stop working.

I upgraded, and to my surprise, NOW the carrier settings don't work. I visited the apple store, and was told I needed to buy a new phone. Seeing how long this has been going on, how many people are dealing with this, and the lack of an update, it seems a bit like planned obsolescence. Would love an update to be able to use my phone again.

This is how I solved this problem.

Reset the network settingsHard iPhone reset (press volume up once, volume down once and hold power button)Then remove the SIM cardUse the phone until it turns offReplace the SIM card while it is turned offPut the phone on chargeLet it stand there till it boots up

I hope this works out for you, I tried everything and nothing helped until I found this solution and it works, at least for me ...

This is how I solved this problem. 

1. Reset the network settings
2. Hard iPhone reset (press volume up once, volume down once and hold power button)
3. Then remove the SIM card
4. Use the phone until it turns off
5. Put the SIM card back in while it is turned off
6. Put the phone on charge
7. Let it stand there till it boots up 

I hope this works out for you, I tried everything and nothing helped until I found this solution and it works, at least for me ...

I’ve been dealing with this problem for some time, yesterday I updated to the 14.7 RC BETA and have not yet in countered a problem with data going down which was happening to me on my iPhone 11 every few hours.. crossing my fingers apple patched this, so far so good……

That's just ridiculous I literally bought one of the most expensive phones the legendary iphone 12 pro and what i get is device with excellent camera and thats it . Breaks during phone calls. If the phone switches between antennas while talking somtimes the call fall. The system literally prefers poorest signal on 4g instead of excellent 3g signal. Sometimes i success force the phone to switch 3g by shutting down the wifi , can't understand it because the wifi calls is already disabled. Well done apple i prefer my stable iphone 8 at least I can talk with it.

I have the same issue with my iPhone 11 Pro after recent 14.7.1 updates. No service for cellular data. I tried all the trouble shooting steps and none of them work.

i contacted Tmobile and nothing wrong in their end. Anyone has any luck on this bug?! My phone can only function on wifi now. thanks!

I had the same issue show up on iOS 15. Been through all the forums and seen the same stories. Long story short, I took it to an apple store and they ran a diagnostic and found issues with the hardware. They replaced my phone and it’s now working great. iPhone 11 Pro running AT&T eSIM and Verizon SIM card.

I have the same problem and had to go to back to using my wife's pink iphone from 2016. How can I revert the IOS version. They have to give an option to go back to previous version of IOS. BTW, my phone is Iphone 11 pro max. Is this scheme by Apple to force some users to buy new one?

I have an Iphone X and since the latest ios 15 update my signals for phone suddenly went off and since then it’s of no use. Tried inserting the sim in other phone working perfectly and have tried resetting network and factory reset as well it is of no use. Please let us downgrade back to ios 14 or provide a solution. Sim is really important nothin Can be done with out it. I’m really sick of this bug. Missed many important meetings and calls due to this bug. Apple’s quality is deteriorating day by day. Really disappointed. Provide some solution pls??

I went through the same thing with the iOS 15.0.2 update and now again with the 15.1 update. It's so frustrating. I did all the things suggested online and had to resort to a full factory reset. About to do it again for the 15.1 update failure. Am I going to have to do this ever single time an update comes out, @apple?!

Hi, I’m also having the same issue with my mom. She has an Iphone 11 Pro, went to the Apple Store and they told her it was a hardware error and that she had to buy a new phone. I can’t believe that it’s been a year since this forum started and Apple has done nothing to solve this issue. My mom was literally one month off the guarantee. And ok, phones can fail, but it is not possible that Apple does not provide a solution to this issue. My mom really takes care of her things, her phone is like new, and we cannot afford to buy another one now. It is so frustrating for me and for her.

Have any of you guys tried the different solutions provided in this forum? Did anything work for you? Please keep us updated!

same thing here, my iphone X have no cellular data, no signal.

I tried reset all, and it didn't work. just tried to erase all, now it won't activate, and I can't even do a back up restore.

scheduled an apple store repair visit tomorrow, see how it goes.

Same problem here (Germany) with my iphone 11. It's already iOS 15.4 and EXACTLY the same problem persists. Unbeliavable. Data works for 2 minutes after turning on and off the airplane mode and that's it. Signal gone again.