So, most people access internet by 3G?
Most people access internet via 2G. Safaricom simcard technology is GSM and is naturally 2G.
2G GSM networks are slow and have a maximum data speed of a couple hundred kb/s
To know which connection is active, open the browser of your cell phone and attempt to access a website. Look at the indication bar, which is usually at the top of the phone's screen, that shows you the cellular signal. If it states 3G, then you know you have a 3G phone.
My blackberry gives me an option to manually switch from 3G to 2G nikiwa mashinani.