How to show phone number instead of email address in Messages?
This is a common problem after setting up a new iPhone.


Open the Settings app.
Scroll down and select the Messages subsection.
Tap Send &amp; Receive.
Scroll down to "Start New Conversations From", and select your phone number instead of your email address.


Here's an article I wrote a while ago with a discussion on this topic: https://deciphertools.com/blog/2014_06_20_stop_sending_imessage_from_email/