P3 updated unit 14

WI-Fi  - Stands for wireless broadband connection, the data transfer rate is up to 20 megabits per second, connects several computers at once, medium range network. You can send pictures, texts, videos, and it depends on what the signal strength is like.

3G - You can access the interent from phone broadband, the data transfer rate is 14.4 megabits per second. It can be used as all the same things for WI-FI depending on your phone broadband speed.

Bluetooth - Exchanging data over short distances, sends pictures, uses radio frequency to transmit data, very secure because you cannot hack it.

Sms and mms - MMS is multimedia message service and SMS is short message service, text messages that can be sent to mobile phoner, long range data transfer, mms is a extension of sms but with pictures and videos.
 
Infrared - IRDA protocol, line of sight and low bit error rate, very efficient, data transfer rate 115 kb/s.

Gprs - Send and receive multimedia content, uses WAP protocols, Data transfer rate 80 kilobites per second.