Nokia 5 User Guide
Tap Settings > Sounds, and under Other sounds, select which sounds to keep.
3.     Use wired headphones, rather than the loudspeaker.
4.     Change the phone screen settings: Set the phone screen to switch off after a short time. Tap
Settings > Display > Sleep and select the time.
5.     Lower the screen brightness: Tap Settings > Display > Brightness level. Make sure that 
Automatic brightness is unchecked. To adjust the brightness, drag the Brightness level slider.
6.     Stop apps from running in the background: Press check_box_outline_blank, and close the 
apps you don’t need.
7.     Use location services selectively: Switch location services off when you don’t need them. 
Tap Settings > Location, and switch to Off.
8.     Use network connections selectively: Switch Bluetooth on only when needed. Use a Wi-Fi 
connection to connect to the internet, rather than a mobile data connection. Stop your phone 
scanning for available wireless networks. Tap Settings > Wi-Fi, and switch to Off. If you're 
listening to music or otherwise using your phone, but don't want to make or receive calls, 
switch Airplane mode on. Tap Settings > More > Airplane mode.
Nokia 5  Manual PDF