iMessage isn't working after I transferred my number over. What can I do?

iPhones sometimes cling to the old number after a switch. Work down this list:

  1. Date and time. In Settings → General → Date & Time, turn on Set Automatically.
  2. Restart iMessage. In Settings → Apps → Messages, turn iMessage off, restart the phone, then turn it back on.
  3. Check your number. Make sure Settings → Phone → My Number shows the right number.
  4. Sign out of Apple ID for iMessage. In Messages → Send & Receive, sign out, restart, then sign back in.
  5. Last resort: reset network settings (General → Transfer or Reset iPhone → Reset → Reset Network Settings). This wipes saved Wi-Fi passwords and your APN, so set the mobile data APN back to gamma afterwards.

Activation can take up to 24 hours after a switch, so give it a day before escalating.

Related