Nokia 306 - Manual (Page 11)

Avoid touching the antenna area while the antenna is in use. Contact with antennas
affects the communication quality and may reduce battery life due to higher power
level during operation.
Connect a headset
Do not connect products that create an output signal, as this may damage the device.
Do not connect any voltage source to the Nokia AV connector. If you connect an
external device or headset, other than those approved by Nokia for use with this
device, to the Nokia AV connector, pay special attention to volume levels.
Attach a strap
Straps may be available separately.
Basic use
Your touch screen phone
Change settings quickly
Rather than going into the phone menus, in most views, you can quickly change some
settings by swiping down from the top of the screen.
Basic use 11