Update to iOS 9.3 is forcing apps to crash, hang and freeze on the iPhone 6s and iPhone 6s Plus
A video posted to YouTube shows links crashing and freezing. So many complaints are being posted about this, that we would have to assume that Apple is aware of what is going on. And that should mean that a fix will be issued shortly.
source: AppleSupport (1), (2) via BerkAtaÖzkan, 9to5Mac