Help H instead of 3g?

[android_mick]

Ok I have H2O wireless which uses the AT&T towers and I notice that my status bar has "H" instead of 3g. I don't really notice any difference in data speeds, its not too shabby. Just curious.
Inspire 4g
Edit:forgot to include phone model

 

[Saltine713]

H refers to HSPA +, aka 4G. And yeah, you should notice a pretty big difference if you have good reception with the 4G.

Now AT&T is going to use 4G LTE, even faster!