To reset the phone to the default presets, please follow the next steps: Main Menu -> Settings -> All Settings -> Create Backup and Reset -> Reset to Factory Settings.
P7 Seon
Solution: Menu>Phone>Press the three horizontal lines under the display>Settings>Settings>Tick "Turn on mute".
To view the recently started apps it is necessary to press the "Home" key until the tabs with the recent started apps is displayed. To close them, it is necessary to slide to the left or to the right on each window.
Yes, you can change the phone's launcher by using profile app that can be downloaded from the App Store.
To view more information about the phone (Battery level, SIM card status, IMEI info) it is necessary to access Menu>Settings>All Settings>About Phone>Status.
To take a screenshot without using a profile app is necessary just to press at the same time the Power and Volume- keys.
To transform your phone into a hotspot, follow the next settings:
Menu>Settings>All Settings>More...>Tethering and Portable Hotspot>Wi-Fi Hotspot>Enable.
To access the DTS settings you will have to reopen the Music app, open an album and play a song; on the play screen, on the right, you will find the "dts" symboland the DTS effect settings will be displayed.
To activate the face unlock you will have to access: Menu>Settings>Security>Screen Lock>Face unlock>Configure.