📶Physical SIM #1

This is the main method. It should work for most carriers; T-Mobile, Boost, Google Fi, etc.

This DOES NOT work with Verizon, AT&T or Redpocket as users have reported.

Steps:

  1. Take your active SIM card and put it into your iPhone (Please wait about 10-20 minutes to make sure that Apple has your number registered to iMessage.)

  2. Turn on Airplane Mode, but keep the Wi-Fi on

  3. Take out the active SIM card and replace it with the inactive SIM card

  4. Keep your iPhone always powered on, plugged in and connected to Wi-Fi

    • Keeping the iPhone always on may not be necessary, I'm currently testing it and I haven't been deregistered yet!

  5. On your Mac, make sure to accept the "new number" being added to your Apple ID

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