[Splendor]

> Usually with iPhone/iPod Video upgrades, getting the latest version of iOS with an older device can significantly degrade performance.

Is this claim based on anecdotal evidence or some other source?

[xigency]

There was a class action lawsuit filed just a few months after an upgrade was released:

http://mashable.com/2015/12/31/iphone-4s-ios-9-lawsuit/#l.Zf...

Edit: I'm not sure if this has been fixed with the later iOS 9 versions.

[atom-morgan]

Anecdotal. But literally everyone I know says this including me.

[jlarocco]

Probably anecdotal, but I've had the same experience.

It affects iPad, too.