Set your device to turn on and turn off automatically
On the Home screen or in a folder, click the Options icon.
2. Click Auto On/Off.
3. Set the Weekday field to Enabled.
4. Specify the times when the BlackBerry® device should turn on and off on weekdays.
5. Set the Weekend field to Enabled.
6. Specify the times when the device should turn on and off on weekends.
7. Press the Menu key.
8. Click Save.