Descriptions : A (very) long time ago Android introduced a feature that allows you to display certain widgets on the lock screen. For some reason, this useful feature was removed with the release of Android 5.0 Lollipop, which limited widgets to the home screen only.
While some manufacturers like Samsung have brought back limited versions of lockscreen widgets, you're usually limited to the widgets the manufacturer has already made for you.
Features :
+ Lockscreen widgets are displayed as outsourced "frames" at the top of your lockscreen.
+ Add a widget by tapping the plus button in the frame. This plus button is always the last page.
+ Each added widget gets its own page.
+ You can press and hold a widget and drag left or right to rearrange it.
+ Tap the frame with two fingers to enter edit mode: you change the size and move the frame and remove the current widget here.
+ Tap the frame with three fingers to hide it temporarily. It is shown again as soon as the display switches off and on again.
+ Any home screen widget can be added as a lock screen widget.
Required Android Versions : Ice Cream Sandwich [4.0.3–4.0.4] - Jelly Bean [4.1–4.3.1] - KitKat [4.4–4.4.4] - Lollipop [5.0–5.0.2] - Marshmallow [6.0 - 6.0.1] - Nougat [7.0 – 7.1.1] - Oreo [8.0-8.1]
