A free app for Android, by BRB Apps.

Fast Phone Settings is an application for android phones and tablets that lets you manage the setting and display of your phone and tablet without the need to root the device.

The app includes most of the settings like Network, Phone, Advance Settings, and System Info. It also includes some new ones that are exclusive to this application.

The most common one is display:

You can choose the size and resolution of your display. You can also choose to have it be full screen or not. You can turn off the screen when you are using the application. You can also choose to adjust the volume of the notifications.