i would like to share my experience here, my 3GS with 5.1 i feel more smoother than my Ip4 5.0.1 JB. i did a few try on downloading apps n update apps from apps store. both on same wifi and updating same apps at same time. the 3GS finish faster than Ip4. battery live i m happy with it. 2yrs+ old 3GS battery live still on par with 1yr old Ip4. (touch wood it still serve me well)


Latest tried out..i was updating FB apps on my iph4, and realise i shud update on 3GS as well. So walk to my dest pick up d phone turn on wifi,go to apps store n start update FB apps. Guess what, 3GS finished update 2 apps and ip4 still working hard updating the FB.
Now i got doubt on either ip4 prob or is due to JB or ios5.1 is better.


This post has been edited by teo: Apr 3 2012, 11:54 PM