Open Log
and select Options > Settings.
To set the time period for keeping log events in the device memory, select Log duration > Change. Select the number of days after which logged events are automatically deleted.
To set the time period for keeping log events in the device memory, select Log duration and press the scroll key. Select the number of days after which logged events are automatically deleted.
If you select No log, all log contents are permanently deleted.
To save your setting, select Back.