This is just for information and wondering how come it is true..
When I use my virgin mobile sim in non-3G phone, I get barely any signal but using same sim in an HSDPA phone, signal is on its full strength (Better than vodafone, o2, 3 )
How come virgin's 3/3.5G is much better than 2/2.5G?? Does these two entirely different infrastructure and independent of each other? Why is voice signal pretty flat in same area where HSDPA is stronger than its counterpart.