
screen settings
Set the phone screen to switch off after a short time. Tap
Settings > Display > Sleep and select the time.
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.
in the background
Tap the square key, and close the apps you don’t need.
selectively
Switch location services off when you don’t need them. Tap
Settings > Location, and switch to Off.
Use network
connections selectively
•Switch Bluetooth on only when needed.
•Use a WLAN connection to connect to the internet, rather
than a mobile data connection.
•Stop your phone scanning for available wireless networks.
Tap Settings > WLAN, 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
Flight mode on. Tap Settings > Airplane & more >
Airplane mode.
Save on data roaming costs
You can cut data roaming costs and save on your phone bills by changing mobile data settings.
To use the optimal connection method, change the WLAN and Cellular networks settings.
Data roaming means using your phone to receive data over networks that your network
service provider doesn't own or operate. Connecting to the internet when roaming, especially
when abroad, can raise data costs substantially.
Using a WLAN connection is generally faster and less expensive than using a mobile data
connection. If both WLAN and mobile data connections are available, your phone uses the
WLAN connection.
Connect to a WLAN network
1. Tap Settings > WLAN.
2. Make sure WLAN networking is switched to On.
3. Select the connection you want to use.
Close the mobile data connection
Tap Settings > Airplane & more, and switch Cellular data off.
Tip: To follow your data usage, tap Settings > Data usage.