Bluetooth
Bluetooth can connect to other devices and send lots of things like music pictures or videos
mms
mms is when you send pictures to other devices using 3g and it comes through like an msn message
mobile network-sms
mobile network allows you to use the internet for all the things you need and sms is when you can text anyone when you need things or when you're bored
WI-FI
Wi-Fi is when you connect to someone home hub and use the internet when you can't use your mobile network
