Hi!
About phone verification, I have good news
API platforms to save you from re-inventing the wheel!
https://www.twilio.com/sms
APIs that handle common use cases out of the box, so you can focus on getting ahead, not simply getting started. Twilio handles the intricacies of global communications, best practices like user segmentation, privacy and more.
I hope stackideas can develop this app into a plugin