Same phone numbers

[kaz123]

I have just had an upgrade to galaxy A21s phone but my new galaxy TabA has a deferent phone number. Both on the same WiFi but I can't use my tablet to phone out. Says I have used all my allowance Can I change the phone number on my tablet to that of my phone? I can then use either to make and receive calls. 

[Pugs1957]

No, the phone number is determined by the sim. You can swap sims on both devices if they are unlocked or if you use the same carrier for both devices.