HMD T21 user guide
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Control volume
Change the volume
To change the volume of the tablet, press the volume keys.
Do not connect to products that create an output signal, as this may damage the device. Do not connect any voltage source to the audio connector. If you connect an external device or headset, other than those approved for use with this device, to the audio connector, pay special attention to volume levels.
Change the volume for media and apps
- Press a volume key to see the volume level bar.
- Tap more_horiz.
- Drag the slider on the volume level bars left or right.
- Tap
DONE .
Set the tablet to silent
- Press a volume key.
- Tap notifications_none > notifications_off.