you must have a SIM associated with an apple device for (my number) to be used for imessage and facetime
I restore my phone, erase all data and settings, i had an e-sim and i didn´t delete, so i get this message, i switch to a physic sim yesterday in my phone company, reset all my iphone again and still getting the same message, also y get the message that activation fail, cant use imessage and facetime
iPhone 13 mini