[Newb] How to trigger IG phone verification?

Guys, I know this is a newbie question…I don't have much experience with IG.
I need to know this because I would like to make some tests on some PVA accounts, but I don't want to get to the point when IG forces me to phone verify my accounts…I just want to do this verification on my request.
Thanks

PS: I did insert the phone number in the user profile, but no message has been received from IG.