
Sony Ericsson Mugua
Find "Ring volume"
Press the Navigation key.
Scroll to Settings and press the Navigation key.
Press Navigation key right to find Sounds & alerts.
Scroll to Ring volume and press the Navigation key.
Set ring volume
Press the upper or lower part of the Volume key to adjust the volume.
Press the Navigation key to save.
Press the Navigation key.
Exit
Press Disconnect to return to standby mode.