It's important that the date and time are correctly set as some phone functions may not work. In most cases date and time are automatically set, but you can also set them manually.
Find " Date and time"
Slide your finger down the display starting from the top edge of your mobile phone.
Press the settings icon.
Press Date and time.
Activate automatic date, time and time zone update
Press Automatic date and time until the function is activated.
To manually set the date, time and time zone, you need to deactivate automatic date and time update and press Set date, Set time and Select time zone. Follow the instructions on the display to set the date, time and time zone manually.
Return to the Home screen
Press the Home key to end the session and return to the Home screen.