Hey I had my 3G jailbroken and it was slow ran like crap I was wondering if my iPhone 4 will run slow to? And whata good about jailbreaking besides themes.
Yes and no...if you JB, you're probably running a bunch of stuff that will slow things down a bit, especially on the 3G, which had limited memory to work with. When I ran a lot of memory intensive apps on my 3G it definitely had an impact...same stuff on the iP4 is no problem at all.