You can't change your phone number in the Signal app directly, but you can deregister your old number and then update the app ...

Now, open the DefaultSMS app to choose your preferred default messaging app. You can choose between Signal, Telegram, and WhatsApp. Or, if you frequently jump between Signal and W ...

Instead, you need to open and register Signal on the new phone and select an iOS transfer. Then you use a QR code to connect the old and new iPhones and a transfer will begin. Be warned — that ...