Step 3. Tap on the ‘Find by Phone Number‘ option from the contact options.
Step 4. Enter the phone number of the user you want to add. Make sure you enter the correct country code as well.
Once the search result is revealed, you can add the user to your contact list and start messaging him/her.
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Number 2 – Add users who are in your contact list, but are not on Signal yet.
Step 1. Open the Signal Messaging app on your smartphone.
