Does my iPhone / iPad support Night Shift?

Night Shift, first introduced with iOS 9.3 is limited to devices with 64-bit processors. This means that on some older Apple hardware Night Shift is not supported.

To see Night Shift in the Settings you must have iOS 9.3 or later installed on one of the following devices:

For comparison, here is a list of iOS devices along with their Night Shift compatibility:

No Night Shift mode
iPhone 4s, iPhone 5, iPhone 5c
iPad 2, iPad third-generation, iPad fourth-generation, iPad mini
iPod touch 5G

Supports Night Shift mode
iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE
iPad Air, iPad Air 2, iPad mini 2, iPad mini 3, iPad mini 4, iPad Pro
iPod touch 6G