Right now, I have an iPhone 4 running iOS 7. It's pretty dang slow. There are some apps that I technically can download and use, but in practice are so slow as to be unusable (Snapchat, for instance). I'd like to upgrade to a 5, but I've read that on iOS 9 they can be slow, too. But would it at least be faster than my iPhone 4? I've been digging through speed tests and everything seems to be 4 vs 4s or 4s vs 5 or else 4 vs 5 both on iOS 7. The few direct comparisons I've found have only shown time to power on or a benchmark app, nothing that shows how much they lag due to their OS. I'm guessing any iPhone 5 I buy will have iOS 9 installed on it, slower than 8 or not, so can anyone tell me how they compare? It'd be nice to at least be able to run apps that require iOS 8 or higher (which is a lot of them these days), but if it's not going to be any faster then I might wait until I can afford a 5s for an extra $100.