Moments widget is a virtual locket that shows live photos from your friends, right on your phone's home screen, will be update automatically when some friends send you a live photo, just like magic. Also, you can set a photo reminder (or noteit) for your dear friends, the reminder photo will auto update on your friends home screen, and system will reminder your friends by notification. You can set a widget for all your Moments friends, or you can set different widgets for different friends.