Cant send messages from iPhone 15 Since starting a new contract with an iPhone 15 with ID Mobile, I have never been able to send a standard text message. They always fail saying ’Not delivered’. I tried the steps in another post I found here (detailed below) but they dont work for me - I could never get my old temporary number (that I got before I ported my number across) to update to my existing one. Despite following the steps, and pressing save, etc, the old temporary number remains.Can you help please? // Instructions from the other post on the ID Mobile site // 1) Turn off iMessage (Settings > Messages)2) Restart your phone (by pressing and holding the on/off button)3) Tap Settings > Phone > My Number and confirm that it is correct. 4) If it is not correct, please enter the correct number5) Turn iMessage back to On (Settings > Messages)6) Finally, go to Settings > Messages > Send & Receive and