As of yesterday evening I noticed my iPhone Air was showing the satellite icon in the top info bar indicative of no mobile signal. (I was in an area with great signal)
Naturally, I started troubleshooting, rebooted, airplane mode on and off, network settings reset. None of which resolved the lack of signal bars.
Next step was to request a replacement esim in the app, remove my existing one and re-activate the esim.
After about 10 mins of “activating” I got the below message.
Fair enough, so I get in touch with ID Moible customer services, who confirmed they could see a pending activation request and to wait an hour.
So I waited an hour and nothing, so re-contacted them detailing all of the troubleshooting attempts, and all they could do was confirm there were no ongoing issues and then they re-issued another esim from their side..
Here’s where it gets weird though, although the activation failed, I can still make calls and receive sms messages but only when on wifi using ID Wifi Call

I even got the message saying my new esim was active but again still no mobile bars

Im now thinking perhaps its a problem with the mobile hardware in the iPhone, so I add my giffgaff esim and boom instant activation, full mobile bars and 5G data!
The only troubleshooting left is an iOS related issue, having recently update to iOS 26.4.1
But again, giffgaff is working so hmmmm.
Im at a loss peeps, anyone?