iOS 14 no signal, no cellular data

Hi I was in a similar boat for the past 2 weeks.
Cannot make calls and every time I try to make a call it drops to 3G and then does nothing. Tried everything that has been suggested in the comments. Even a DFU restore and nothing worked.
I decided to go to my telco and was expecting them to tell me it was a iPhone issue but the lady noticed that VoLTE was turned off on my account. She turned it back on and refreshed my account and lo and behold it was fixed and I can make and receive calls now!! maybe this might work for some of you out there!
They have no idea who or what could have turned it off as it’s usually turned on as standard.

I have a similar issue. But I am not getting errors. But I was using a VPN and I can’t seem to turn it off.

Just got back from AT&T, got a new sim, finally got a signal, got home and the dreaded no cell, you need to update blah blah blah. Reinstalled 14.2 after wiping completely and after restoring my backup, behold, no signal but wifi. I know it's a baseband problem, if you look at modem firmware under general in settings, it is BLANK. So, something is corrupting the baseband firmware. All this is on iPhone 7, I can put my sim in my iPhone 6 and have no problems but it is on 12.4.9.

it’s the same for me to ..
I’ve been suffering from this issue for like a month my IPhone is Xs and Since I updated the iOS to 14.0 the cellular signal disappeared now and then and won’t come back until I shut the phone down and I updated the iOS to 14.2 to and still didn’t fixed ..
and when I tried to get their help they give the same list you wrote and none of them work so the only thing I have left is as they told me to restore and recovery my iPhone

I had this error happened to me too.
I was able to use the data the first day then it started to only display searching network or 4G but no data connection..
I fixed it by installing the APN of the certain carrier I was using. try searching for the setup procedure of your cellular data plan. it should be found there.

Hope this can help.

I have an Iphone 12 Pro. I was experiencing a cellular issue since IOS 14 came along, whereby I was dropping off the network even though 4G on one bar was still showing. Had to toggle Airplane mode to reset.

However, I downloaded and installed IOS 14.3 in beta about 40 hours ago and haven't had the problem appear since. Seems (fingers crossed) to have resolved it. I gather there is an modem update contained in 14.3. I have never downloaded a beta version before but the problem was annoying me so much, I felt it was worth rolling this dice this time around.

Keep us updated garyhurley ;) thanks

The same thing has happened to my sister. The phone reset a couple of times and now cannot do anything. First the screen wouldn’t work & now it does but there is no data or cannot then WiFi on, all of the buttons have been greyed out. This has been since the iOS 14 update.

has anyone managed to get a resolution from Apple?

iPhone 11 Pro, tried updating to iOS 14.3 public beta - did not help, the problem is still here.

I recently updated my iphone8 to 14.2 and had the same issues. Temporarily it would work by turning on and off airplane mode. Spoken to an adviser at apple and finally resolved it by deleting my vpn app Norton as wouldn’t allow me to just turn off. Haven’t had any issues since.

Hi folks . Same here
iPhone XS / Switzerland located/one week after updating to ios14.2 suddenly NO SERVICE . 3G was working for one day and that’s it . Apple chat support is saying to hand in the iPhone for repair as a software fault could not be the reason (funny). Tried all the things out which I found here . Hope the Apple guys will find a solution pretty ASAP. My mobile provider is also trying to help but no results so far . Will try a new SIM card and then hope for 14.3

same thing on my SE 2020,ios 14.1 still didn't update to 14.2 and its happening on a daily basis,I was worried that maybe it was issue on my side but now I see that others have same problem so looks like firmware is broken...

After a few weeks or so of trouble shooting, arguing with my cellular company (then realizing it was Apple and not them that was the problem) and resetting my phone numerous times, I’m deciding to make the switch to Galaxy. This is ridiculous to pay $1,000 for a phone and the update ruin my data connection. I can’t even listen to songs on Spotify or download a video on Netflix without wifi. And if it’s a private address, forget connection to wifi. I shouldn’t have to risk hackers getting access to my data to connect to my HOME wifi. I can’t connect to my own wifi without turning off private mode, makes NO sense that i can’t connect... at all, worked just fine before update. Never using Apple again, they have yet to fix the issue. Selling my iPhone ASAP. Fix this issue before you lose more customers. Shouldn’t have to go weeks without service when I pay to have good connection, and Apple (not my carrier) is ruining it.

I’m using iPhone XR. HUGE annoying data connection issues w both iOS 14.1 > would NOT recognize my wifi. Solution: reset network settings. I sure dod not want to, but it fixed 14.1, then with 14.2 > 3G, no 4G and NOOOO cellular data. Grr. Same solution (reset network settings) appears to have resolved this as well.
i’m not rushing to update my older iPad Air! ... maybe until I get a sys update that works on first install. Concerned that 3G, 4G, 5G ay regularly cause similar issues across the various iOS devices.

Dear Apple - GET ON THIS! Each rollout needs to be tested and working for wifi and cellular data on all iOS devices IN ADVANCE of rolling out an install. Less is just irresposible.

I have an iPhone SE 2020 only 6 months old. Updated to OS 14.1 a while ago, then suddenly out of nowhere I couldn't send texts.

Thinking it may be an OS bug, I updated to 14.2..... big mistake.

I went from just no texting, to "No Service" at all. No calls, texts.

I tried:

• reset network settings multiple times

• removed and replaced SIM card multiple times

• toggling airplane mode off, waiting 30 seconds, then back on several times

• toggling cellular data off, waiting a minute, then back on

And I spent an hour with my service carrier, going through every single troubleshooting step they had. The said service on their end looks great, no problems. And they said they've had a ton of other people with the exact same problem asking for help today, but it's an Apple OS problem.

So my phone is useless until Apple fixes this. No calls, no texts. Please developers, please fix this.