09-10-2025 03:27 AM
As per title.
I have a newly acquired iPhone 15. During Data transfer it advised me to upgrade to iOS 26.0.1. This was successfully done on WiFi and the data transfer from my previous phone went smoothly.
When I took the SIM from my working iPhone 13 and inserted it to the 15, contacts facing up, I get No Service, no bars, cannot make calls, send SMS, and no cellular data. When I replace the SIM in the iPhone 13, I get 5 bars of 5G and everything works as it has always done in that phone (that one is still on iOS 18.7.1 and I do not plan to upgrade to 26 until I hear far more encouraging news.
I have tried flight mode, force restart and network reset on the iPhone 15. None of these made any difference. I suspect this is an iOS bug (I read that this was recognised with iOS 26.0, and 26.0.1 was supposed to fix this. Or (less likely) a phone hardware fault.
Has anyone experienced similar and found a fix?
Many thanks for any suggestions,
Solved! See the answer below or view the solution in context.
09-10-2025 09:13 AM
Hi @dholburn
Welcome to the community.
Have you bought the phone as brand new or was it a second hand phone?
My thinking is that it is the phone could be blocklisted, especially if it is a second hand one, as the symptoms you've described could also be seen if that was the case.
It is worth trying to go to Settings > General > About and make sure that the Network Provider shows as EE 65.0.2. If it doesn't, wait on that screen for a couple of minutes to see if an update to the carrier settings appears to install.
I'd also recommend trying to do a manual network search by going to Settings > Mobile Service > Network Selection.
If that still doesn't help, please contact our tech guides, who can run some other checks with you to see if they can get it working.
Michael
09-10-2025 09:13 AM
Hi @dholburn
Welcome to the community.
Have you bought the phone as brand new or was it a second hand phone?
My thinking is that it is the phone could be blocklisted, especially if it is a second hand one, as the symptoms you've described could also be seen if that was the case.
It is worth trying to go to Settings > General > About and make sure that the Network Provider shows as EE 65.0.2. If it doesn't, wait on that screen for a couple of minutes to see if an update to the carrier settings appears to install.
I'd also recommend trying to do a manual network search by going to Settings > Mobile Service > Network Selection.
If that still doesn't help, please contact our tech guides, who can run some other checks with you to see if they can get it working.
Michael
11-10-2025 06:03 PM
Hi Michael_D
Thanks for your input. I can now add further to the info, but I'm away at a convention so can't make much progress until I return home on Sunday 12th October.
I had a conversation on my previous phone (an iPhone 13 purchased October 2023) with two EE tech advisers (Plymouth and Newcastle) on Thursday 9th October. They were most helpful. The iPhone 13 has iOS 18.7.1.
Unless I hear advice to the contrary, when I get back home to fast internet, I plan to do a full reset of the iPhone 15 and re-copy the data from my iPhone 13. I plan to leave the physical SIM out of the '13, and see if it is possible to:
1 - transfer the eSIM from the 13 to the 15. Forums say the phones have to have the same iOS version. I am not sure about upgrading my 13 to iOS 26.0.1 as Forums suggest there are issues with SIMS for 26.
2 - Or, obtain a replacement physical SIM from my local EE store
3 - if none of these succeeds I will return the phone to the seller.
Does this seem reasonable? Thanks in advance for any suggestions.