Blue lights in upper right corner between speaker and front camera need blinking what are they for?

[Android Central Question]

Two may three little lights that light up blue.upper right corner.

 

[belodion]

You're unlikely to get an answer, since you haven't told us what device, despite posting twice. Posting more than once is deprecated. Threads merged.

 

[Rukbat]

If it's the LED notification light, and a Samsung phone, a blinking blue is storage access (like disk access in a computer).