06-08-2017 05:01 PM
Make sure the message centre on the phone setting is set to the correct number.
06-08-2017 05:34 PM
Open up messages. And open settings
Then within there are the option to change the number.
07-08-2017 07:53 AM
Actually, the menu screen wasn't teriffically intuitive, and the only place I managed to find the message centre number was by 'dialing' *#*#4636#*#* and hitting 'refresh'.
Apparently, though - according to EE Customer Services - Carphone Warehouse hadn't properly registered my sim/phone number, so I'll go back to them today and see what happens!