Kyocera Rio E3100 User Manual page 13

The following shows the back of the phone.
1. Accessory eyelet (for optional straps and lanyards).
2. Jack for AC adapter (included) and Micro-USB cable
(sold separately).
3. Camera lens.
4. Power key turns on the phone. Press and hold the
Power key to turn the phone on or off. When the phone
is on, press the Power key to lock or unlock the touch
screen. This prevents accidental touches.
5. Jack for a hands-free headset (sold separately).
6. External speaker.
7. Camera key activates camera mode. Press and hold the
Camera key to activate camera mode.
8. Volume key raises or lowers ringer volume.
Warning: Inserting an accessory into the incorrect jack
will damage the phone.
User Guide 13