Since my upgrade to iOS 5 GM my cellular data seems to have gone screwy saying I've done 9GB each way since June 2010, which sounds a fair amount, but I barely ever use 3G, infact I'm halfway through a billing cycle and have only used 3MB according to MyO2. Odd.
On topic, I can easily manage on 500MB a month as the majority of the time I'm on WiFi.
On topic, I can easily manage on 500MB a month as the majority of the time I'm on WiFi.