Why keep a phone which is not used? Sell your mobile at the Biggest Mobile Market.
USB
USB is the short form of Universal Serial Bus. It is used to refer to a cable, connector or a communication port, that helps in data transfer. The USB cable can be connected to those devices, which have a USB port. This is commonly used to connect devices like your cell phones and camera to your Computer for data transferring.
Check the meaning of technical terms related to Mobile Phones: