Why is my phone showing 2g when its a 4g phone g2x

There is nothing wrong with your phone.It shows that currently you are using a 2G (Second Generation) Network service on your phone.You will get a 4G symbol on your phone only when your network supports 4th Generation LTE ( Long Term Evolution )Technology which can provide speeds up to 21 Mbps HSDPA.Network giants like Verizon, T Mobile, AT&T..etc are currently providing 4G Network Services across the world.Hope you are satisfied with my solution.Please leave me a reply if you need further assistance.Your valuable feedback would be appreciated.Thanks for choosing Fixya.

Check with your service provider whether you activated 4g