Over the last few weeks I have been having an issue with my iPhone 6S Plus and the Three network. Over the last four years I have had very few if any issues with my Three data connection, so it’s weird I am having an issue now.
I have been at home on the Wi-Fi, I leave the house and then wherever I am I check the phone as find that it says.
Could not activate mobile data network Turn on mobile data or use Wi-Fi to access data.
This is even with 4G being in the top of the phone. Clicking OK results in no change.
What’s interesting, was that I thought it might be a handset issue, but family (also with Three) are having similar issues with their iPhone 6S and a newer iPhone XS.
At the moment, the solution is to go to airplane mode and then turn that off. At which point all works fine.
It’s not isolated to a single tower either, as it happens locally and further afield.
I don’t have a real solution and it appears from searching online others are having similar issues as well.