GSM vs GSM 900/1800/1900; GRPS

GSM is the network type.

GSM 900/1800 is for Europe and Asia
GSM 1900 is for North America

GRPS is completely different, its like a high speed version of WAP.

 

You've got it quiet wrong about WAP and GPRS essentially two seperate things intended for seperate objectives.

I think you will both benefit from this reading:

FAQs about WAP and GPRS

It's quiet educating.

 

I assume they're both capable of same speed, each is GPRS class 8 (and WAP 1.2 browser)