I have create a member type "Student" and how can I assign that member type and ensure that the types are allocated to user roles with mobile registration?
If you are using WPLMS custom Registration Form then in that you can set the member type option
https://prnt.sc/10out8r
You can also set user role, so whenever someone registers with this form, the roles and member type will be automatically assign to that user
Can I use custom registration form with firebase mobile registration ?
Currently, phone validation is not available in the custom registration form.
In 4.x migrated site phone validation login and register show in the popup.
so how can I assign members type to new regis user using phone validation?
Well im sorry currently this is not available as of now .