I have a SONY XPERIA Z5 Premium . The problem is the tiny LED notification light doesn't show red light. i have tried various led light management applications from the play store but still ain't working. What may be causing this? Running Android 6.0 Marshmallow

1 Answer 1


Have you tested the LED through the service menu?

To enter the service menu go to the dialer and paste in the following code



Service tests

and then


The LED should start to blink in green then blue then red. If your led is not blinking red I would suggest your LED is broken.

  • Hey, i have tried those tests....only the green and blue colors are functional. I meant the red color ain't working when it's set Commented Dec 10, 2016 at 18:51
  • Then I believe the LED is broken. Can you return it to the store for a refund?
    – kirodge
    Commented Dec 10, 2016 at 18:53
  • Unfortunately , the device is a second hand and is not under any Warranty. I thot the led module works as one unit. Commented Dec 10, 2016 at 18:56
  • 1
    Well I'm not sure but according to wikipedia "tri-color LEDs contain three different LED emitters in one case. Each emitter is connected to a separate lead so they can be controlled independently." en.wikipedia.org/wiki/Light-emitting_diode
    – kirodge
    Commented Dec 10, 2016 at 19:03

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