What should I do? You can use this number once because it gets deactivated in 10 minutes to prevent spam and ensure privacy.
Prolog: My FB account is quite new maybe 2 weeks old.
Option 2 Better : Use Phoner app to get a second phone number A better and easier option is to download a second phone number app.
I should also mention I created my Facebook the same day and only had 8 friends when I finally got Tinder working.