A 3G SIM card offers the fastest mobile service for cell phone users. Most newer cell phones offer 3G service with their cell phone plans. You won’t be able to tell if you have a 3G SIM card just by using your cell phone. In order to tell if you have a 3G SIM card, just look at your SIM card. 3G has a symbol on its SIM cards that lets you know that it has 3G. Writer Bio
