The 5S still holds up today.

[jakeuten]

When you compare the 5S's performance on iOS 9(.3) to how the iPhone 4S ran on iOS 7 or how the 3GS ran on 6, this phone seems to be the most future proof iPhone Apple ever made. Does anyone else see this?

 

[pr1nce]

I've got iOS 9.3.1 on my 5s. It runs great.

 

[jjfad]

Still loving it

 

[MaxSmarties]

I still think the iPhone 5S is maybe the best iPhone ever made.