Hello,
this is for iPhone XR, my allowance is set from zero to £10, roaming switched in and according to bt mobile guide
If you have an iPhone 4S or newer, or are using iOS 8 and beyond, you can check the settings yourself.
- Go to Settings
- Select General
- Select About
The "Carrier" should show as BT with the current version greater or equal to 18.1
If the Carrier is not showing "BT 18.1":
- Go to Settings
- Select General
- Select Reset
- Select Reset Network Settings
the problem is XR the carrier is not even on displayed - I have looked around if it hidden and it is not.
