First, open the phone, find the item \"Settings\" on the desktop of the phone, and click to enter.
Second, after entering the Settings, find the drop-down menu \"more Settings\" column, click to enter.
3. After entering more Settings, find the \"Indicator\" column and click to enter.
4. After entering the indicator setting, select the setting mode of the indicator.
Finally, turn on the \"reminder\" switch, so as to turn on the indicator light