Two points I should make, before anyone takes the time to correct me!
1. This is an iPad forum - why am I asking for advice on a steam-powered iPhone 3G?
2. Separate googles I have done have revealed that the 3G is not man enough to run iOS 5, and never will - it's hardly surprising. I understand Jobs forbade multi-tasking on the iPhone 3 series when it was launched, as if allowed to (it is capable), it would run like a dog (with one leg) - that's IT system managers' jargon, if you didn't know.
However, another query occurs to me - will iCloud sync functions be supported on the iPhone 3G?
Thanks again,
Sam