iPhone 14 Mobile Data Not Working - Network Issues

UPDATE (PROBLEM FIXED)

I went to my carrier store and got a new duplicate sim for my existing number, now i am not facing any issues. before that i had a visit to apple service center. As they checked, other sim was working fine so i got to know issue is with carrier. Maybe because of 5g sims coming recently and something with bands used in phone and i was using old sim that might have some old bands that could have removed from new phone. not sure but problem fixed

The SIM (eSIM or physical SIM) is a entity and ID for user cellular account for user authentication and authorization and other user's profile like call, sms, data, etc.

My experience and steps taken to solve my problem:

1. Schedule a visit to Apple Store for HW and RF check. You might need to perform "erase install" your while at Apple Store, so be prepared to upgrade to the latest iOS version (e.g. 16.4.1) and perform backup to iCloud (or MacBook/PC).
2. If you still have same problem, Contact your carrier, e.g. Verizon, to get support.

My case: I provided info (as that to Apple Store or Apple Support) and was asked for the IMEI and carrier bundle and was told to reboot the device and data profile will be pushed and re-inited.

After getting carrier's support to re-inited my (e)SUM data profile, I don't run into the same problem and I could not DUP this problem at places where I experienced the problem before.

I had the same problem, as noted, IPhone 14 does not use SIM card, at least mine doesn’t, it uses an eSIM. There were two eSIM #’s assigned to phone, under Sertings/Cellular. It appeared the old SIM card # number was assigned too. The primary was set and turned on for the wrong one, not eSIM.

IPhone 14 allows for two eSIM #’s, primary and maybe business. Once I deleted the secondary and used the latest eSIM, everything seemed to have started working properly. I now can get data over cellular.

keep fingers crossed it continues to work. Maybe Apple has a problem using 2 eSIM’s.

Good Luck

I’ve found that some connectivity issues arise in my Iphone 14 pro max due to the 5G network. In areas where the 5G tower is farther away and the 4G tower is closer, the phone tries to connect to the distant 5G tower. As a result, even though it shows a 5G signal, the data flow can drop to zero because of the distance.

However, when the phone is closer to a 5G tower, the internet works properly. To fix this issue, I suggest changing the cellular settings from 5G Auto to LTE because it connects to almost all towers. LTE is also very fast and has resolved my connectivity problems. I hope this solution works for you too.

This is also why many people are saying their old iPhones are better than the newer ones, as the older models don’t have 5G and thus don’t encounter this problem.

Did you contact your Carrier? If not please do so.

If you see No Service or Searching on your iPhone or iPad

1. Check your coverage area. Make sure that you're in an area with cellular network coverage. ... 
2. Restart your iPhone or iPad. Restart your device. ... 
3. Check for a Carrier Settings update. ... 
4. Take out the SIM card. ... 
5. Reset your Network Settings. ... 
6. Update your iPhone or iPad. ... 
7. Contact your carrier. ... 
8. Get more help.

If you see No Service or Searching on your iPhone or iPad ...

Remove your SIM card from the SIM card tray and then put the SIM card back. ... Make sure that the SIM tray closes completely and isn't loose. If you use a SIM tray from a different model iPhone, iPad, or from another phone manufacturer, it might not fit properly.

If you see 'invalid SIM' or 'no SIM' on your iPhone or iPad ...

Learn what to do if you see a SIM not supported alert.

To be able to use any SIM across the globe you must have "No SIM Restriction" against Network Provider Lock. Please refer to the pic below.

bryanfromaloha - Now THAT is helpful. I'm on the phone with Verizon and they are saying Apple is saying there are issues with the eSim phones (like the iPhone 14) and they just pushed 16.3 that is supposed to have a patch to help with connectivity problems. Of course I'm pretty sure 16.1 was supposed to help as well but it's still terrible for us.

Make sure you already have a valid back up of your phone. Then setup as a new iPhone on iTunes. When you do this the iPhone should receive a clean install of iOS which will automatically download be performing this process. Once this is done restore your backup and your connections and service should be resumed. If you are still experiencing issues after this you will need to have support from an Apple Senior who will guide you further to resolve your problems

Getting a new SIM card fixed this issue for me - literally went away. Could have been a random software upgrade but, in any case, the problem doesn’t exist any more for me.

it looks like networks are fairly happy to dish out replacement SIMs so I’d suggest going for that…

I uninstalled my Mcafee security app that has a VPN my mobile data/wifi connections worked!

same thing happened to me... I also used a physical sim... I called my network provider then they informed me that its a issue from their end and they talking for a solution with apple, until they fix it they said that they will give 100GB from higher bandwith kinda thing then instructed me to restart the phone after the call... After restarting the phone the issue didn't occour to me.

My daughter use it in the UK and wanted to use it in France during summer vacation.

When we inserted Orange France sim card, display showed full bars and 3G, but no app connected to the internet. I tried all online solutions and none worked. Orange told me to Reset Network Settings, but did not work either.

Finally, I removed UK carrier and university VPN profiles and Orange France data started working.

Hope it helps...

Good afternoon! I have found a solution for the signal issues. I have had this problem since I bought my iPhone 14 Pro Max in march 2023. The solution is to sign out and back into your Apple ID on your phone. I have tried everything else and bathing has worked except this one. Hope this works for more than just me.

Im not sure this will help anyone but I changed my SIM card and put a brand new one in and I have not have any cell problems since

I also have had the same issue. I contacted Apple and they said to do a factory reset which I did. With each release Apple software gets worse. It’s a software issue. I submitted a complaint.