Q: Does iOS 7 Slow Down an iPhone 4?

well i'v updated my iphone 4 and iphone 5 and its fine but with the 4 its seems faster then before so yeh doesn't slow it down for me so really its all down to you and how you find it.

but it is a good upgrade am loving it to be honest..

Mine seems to be ok. You don't get some of the features though that an iPhone 5 would get. Control centre isn't transparent, it's a whit/grey panel. I hear there's supposed to be some parallax effect too but the 4 doesn't get that either. Also no live camera filters. Performance-wise its not noticably laggy so I'm happy with it so far.

Its not doing my iphone 4s any favours....phone barely works its so laggy. Ive posted a question asking for help and noone else seems to of had it so it may just be mine ( typical).

Yeah tried that, apparently 3.5 gb. Its totaaly bizarre it worked fine for about 10 mins then next time i tried it laggy and has been since....

Resetting all settings has appeared to work for now.... ill keep updating if it changes so anyone else who is suffering knows what to do.....

I upgraded my iPhone 4 last night and it works ok other then when you are typing in anything from the keyboard there is huge delay of a few seconds before the entry shows up.  I hope they put through a fix for this.

I wish i didnt upgraded mine, its slow and the calendar suck.