After signing into websites, sometimes they'll prompt you to...
- Double check your security settings
- Update your contact info (e.g. phone number, etc.)
Let's use this style of modal to prompt users to verify their phone number. We'll show this only after they sign in.
I'll mention, I'm not completely in love with this UX because when you're signing into an app, you're doing so because you have a clear goal in mind. This style of UX adds a barrier and distraction to you completing that goal.