MMS messaging requires your phone number

[Judy25]

just signed up and keep getting the message “MMS messaging requires your phone number”

 not sure how to fix this

[hTideGnow]

hi @Judy25 

you still have your old sim there

remove the old physical sim.

and check Settings -> Cellular and disable all the old  eSIM

make sure PM sim is the only one with Turn on this line enabled, and also set as Primary.  Try again 

[Judy25]

No other plans, just Public 

[Techfish]

Do you have another plan on your phone from another company?

[Judy25]

Yes, an iPhone SE 

In the settings under messages it looks like multiple numbers are entered. 

[slusagm]

iPhone or Android ?

Reset network settings first 

Then if Android, uninstall Google Message, reboot and reinstall 

If iPhone l, remove the phone number from Settings, reboot and add the phone number back

[Techfish]

Are you using an iPhone? Is MMS enabled in Messages settings? Is your phone number saved in Settings?

If that doesn't help, I would suggest submitting a ticket with the orange chat icon on the lower right.