How to change message center number in iPhone 11?
From the home screen, tap Phone. 1. If the dial pad is not visible, tap Keypad. 2. Enter *#5005*7672#, then tap Call. 3. The current SMSC setting is shown on the screen. Tap Dismiss. 4. If the SMSC number needs changing, enter **5005*7672*SMSCNUMBER#, (where SMSCNUMBER is replaced with the correct SMSC number in full international format). 5. Tap Call. The message …