Nokia 700 - Manual (Page 12)

Charge the battery over USB
Battery low, but you don't have a charger with you? You can use a compatible USB
cable to connect to a compatible device, such as a computer.
To avoid breaking the charger connector, be careful when connecting or
disconnecting the charger cable.
You can use the phone while it's charging. For example, if connected to a compatible
computer, you can synchronize your phone.
You can use USB charging when a wall outlet is not available. Data can be transferred
while charging the device. The efficiency of USB charging power varies significantly,
and it may take a long time for charging to start and the device to start functioning.
Change the volume of a call, song, or video
Use the volume keys.
You can adjust the volume during a call or when an application is active.
The built-in loudspeaker allows you to speak and listen from a short distance without
having to hold the phone to your ear.
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