[Restless]

Android is the interface/main program/operating system that the phone uses.

3G Is the speed of the connection your phone receives.

Basically a phone's Internet is very very slow without it. Things are generally faster. I have uploaded a picture to photobucket and facebook in under 30 seconds with high reception on 3G where it took 5 mins(and often fails) on 1G

Also video calls are impossible ( to my knowledge ) without 3G