At first, in the yet-to-be-launched Galaxy J2 (2016), the glowing ring around the rear camera lens will have roughly three functions. Smart Glow can provide Priority alerts, Usage alerts and what Samsung calls Selfie assist. The first, Priority alerts, seems to be comparable to Edge lighting on the Galaxy S6 edge and Galaxy S7 edge. Colors can be assigned to contacts, so one glance suffices to know whose call, message or email was just received.
Usage alerts pertain to the functioning of the phone itself. The Smart Glow ring will light up in different colors, indicating battery status and providing charging alerts. Last but not least, Selfie assist helps taking pictures of oneself using the rear camera. The Smart Glow ring will light up in blue when the face is detected, after which the picture is taken within two seconds.
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