Maxcom MM821 User Manual page 37

You can adjust volume of massage prompt ring.
²
menu→setting→contextual model→normal mode
→personal setting→button
You can set mute, click, tone and vocal tone.
²
menu→setting→contextual model→normal mode
→personal setting→key-press volume
You can adjust key-press volume.
²
menu→setting→contextual model→normal mode
→personal setting→uncover
You can set the ring when the mobile phone is
uncover
²
menu→setting→contextual model→normal mode
→personal setting→cover
You can set the ring when the mobile phone is
cover.
²
menu→setting→contextual model→normal mode
→personal setting→system prompt
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