Bluetooth- Bluetooth is used for phones computers printers etc, you can use it to send files, pictures, music and videos and sometimes like a contact on your phone to send to one of your friends. if you wanted to print something off in school but it was on your phone or ipod, laptop or something, you could bluetooth it to the printer so it can be printed off. The range of bluetooth is about 50 meters
Wifi- Wifi is used so you can have connection so you can text people or go on the internet etc. if your dont have wifi you wont be able to text or ring people, some places dont have wifi like if you are driving somewhere on holiday for the weekend you could be stuck there and there isnt any wifi. The range of wifi depends if you are near it
SMS is known as'texting' you can send different files through texting texting might cost money but it might no sometimes it does when your sending pictures or video. Thr range of sms depends if you are near a phone tower
3G 3G is third generation mobile internet you can use it outside your house where you aren't connected to internet, like on blackberrys on the internet bit at the top it had 3g on it if you have good internet surrounding, the range depends if you are near good phone tower
Infared is a wireless protocol and you can send data over laptops and mobiles and its a meter
range, the range isnt very good because its a t.v remote
MMS it sends pictures to other devices. Range depends if you are near good wifi or phone tower
GPRS is a tracking device. Range is good because its a tracking device