Friends,I noticed something today that I am keen to know the reason for.I use a Samsung Galaxy Ace GT S5830 with Vodafone 3G and one of my friends use the Samsung Galaxy S I9000, he too is on Vodafone 3GWhile doing some speed tests today, I noticed that my phone was max'ing out at around 2.5 mbps download and about 0.14 mbps upload but when I ran a speed test on my friend's mobile, it max'ed out at around 4 mbps download and 1.5 mbps upload. I was literally holding both the phones together while I ran the tests so I know it's not a location issue. I have also been on Airtel and BSNL 3Gs but I have never noticed by phone reaching a speed of above 3 mbps download and about 0.15 mbps uploadAnother thing I noticed is that the network type on my phone constantly changes between UMTS and HSDPA (while data service is ON) but always on UMTS (while data service is set to OFF) ..but my friend's network type always stays on HSDPA (irrespective of whether data is on or off) and the H icon never changes to 3G, unlike mine.So is this because of the difference in tech specs between our phones? Does the I9000 support a higher data rate than the GT S5830?Thanks