iOS 9.3.1 (13E238) for iPhone 4[S]

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iOS 9.3.1 Release Notes

Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

Fixes an issue that caused apps to be unresponsive after tapping on links in Safari and other apps

For information on the security content of this update, please visit this website:

http://support.apple.com/kb/HT1222