GSM VS 3g and 4g

[jw4669]

I was doing some studying and i have some questions just to make sure i am on the right page.
GSM is just for phone connection and 3g and 4g are just data is that correct?

 

[Nolandc]

GSM is a old network made in Europe, some phones still use it. New phones use the HSPA/LTE network. More info here http/geekbeat.tv/a-guide-to-cellular-radios/