Apple has released it's iOS 9.3 which has some great new features for your iPhone and iPad.   Some of these features include a Touch ID-secured version of notes and a new item thats called Night Shift that makes the display colors warmer and not so bright.  Also included is a bug fix for a security hole, the possibility for third-party apps to add music to a user's iCloud Music library and 6s 3D touch functions.  To update your phone, tap the settings icon, then go to general and then look for software update.