So this is why people suddenly stopped calling me:P Haha, I had realized that if i had an active data session I was unable to recieve calls, however SMS seemed to work.
I mostly use GPRS to conserve battery, it's really unneccessary with 3G for IM's and small quantities of surfing. But if I always use 3G people will be able to call me?
I will need to experiment on this, and see if the battery time will be acceptable.