add features to "add phone numbers in account registration" and "optional features to add contacts with phone numbers"

Components

This application is similar to an application that provides online conversation access and also includes one of the open source applications on android. at the time I used this app there are some supporting features of this app which are not present in this app like

1. feature add phone number in account registration
2. feature add contact with phone number

Proposal

My suggestion on this app is to add 2 new features: The feature of adding contacts with phone numbers serves to add contacts to the app with 2 options with ID or phone number. and add a Feature to add a phone number to the new account registration, which works to log into the app using a phone number or by ID, so with this feature we can connect the phone number with the conversation app.

to see where the placement of this feature we can see below

Mockups / Examples

display before and after added feature to add phone number in account registration

display before and after added feature to search contact with phone number or by ID

Benefits

The benefits of adding those two features first to ease the use of the app using both the ID and the phone number and desperately need to add this feature? Because most users sometimes forget about email and even their own number, so with this feature there is an option for users to register using the options provided, as well as the feature of adding contacts with ID or phone number.
then with some features above, it is strongly recommended to add in this application