> Then I realized that the messenger I use to communicate with my family bases identity on the phone number It is only required upon registration or a change o

> Then I realized that the messenger I use to communicate with my family bases identity on the phone number It is only required upon registration or a change of a phone. Most messengers don't require (nor really have a way of figuring out) whether you have the same simcard in the phone, or whether you have a simcard in it at all.