Hi can you please give your opinion on this... I moved to NY last month and brought my UK unlocked iPhone 4. I have purchased a sim and service from AT&T. Now I know that they are not the best network but if I run the speedtest app I am getting: ping 345 download 2.04 upload 0.92 This is in Williamsburg. Yesterday around Manhattan I was getting 0.2 down and up. Is this normal or does my phone need a carrier update to work correctly? O2 in the UK had about 2 down and 4 up if I remember correctly!