There Are Also Some Reasons to Install Right Now
There are also some reasons why you might want to risk it and install the iOS 8.4.1 update on your iPhone 4s.
If you store sensitive files on your phone and want the latest security updates, you might want to consider installing the update right now. The iOS 8.4.1 update comes with a good number of patches for known exploits.
If you're an avid Apple Music user, you might want to install the iPhone 4s iOS 8.4.1 update. The update is focused on fixing some of the problems with Apple's new platform.
And finally, if you're dealing with unfixable problems on iOS 8, it might be worth a move to iOS 8.4.1. The update's change log is small but iOS updates will often alleviate problems that aren't listed on the official change log. Battery issues, connectivity issues, things of that nature.
So if you can't find a fix, it might be worth the move just to see if it irons things out. If it doesn't, you can drop back down to iOS 8.4 if you need to.
This article may contain affiliate links. Click here for more details.