Number porting

[timsneed1]

Is porting a number from another provider or a landline number an option with an Apple Watch on xFinity Mobile?

[johncassello711]

I need a representative to troubleshoot my mobile phone it's only saying emergency phone calls only

[DaveO3]

No.   XM will assign its own line/number. 

From your Apple Watch App cellular settings on your iPhone remove the carrier plan from your old carrier. If you already ported your iPhone to XM you may have to call your old carrier to do this or they will probably keep charging you.