Talk Time Ranking

I want to display a ranking based on the usage history of talk time on your phone.
You can be used by anyone because it is very simple to make.
Since I only display the call time rankings,
It can be used by simply launch the app, all users are available.
There is no problem if the age at which you can make a phone call.

You can select a menu with the following button.
You can set the period of time from the menu. (1-999)
You can make a call from the list.

Tags: call, phone, rankings, time, conversation