How to Turn Off Samsung Galaxy S7 Active Without Screen Blue Light on

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  • #1
Hi All,

I wonder if you may be able to help. This morning we discovered one of our S7 phones was a black screen with solid blue light. It seemed completely unresponsive to touch, wouldn't wake. etc. The home, volume and power buttons seemed to do nothing. I plugged the phone into the computer, it didn't pick up a USB device.

Phone is stock from EE in the UK. No custom anything. Model: SM-930F 32GB.

EE and Samsung couldn't suggest anything to help.

We tried Power + Volume Down - This results in one of the following;
A (A battery with the current fill %) this happens when plugged in
B (Samsung Galaxy S7 powered by android) loading screen which then cycles or returns to a black screen with solid blue LED

We also tried Power + Volume Down + Home button. This does load the Warning screen about using a custom OS.

We have next day replacement warranty on the phone, i don't need to fix this phone.

We only want to try and recovered some data and photos

Any help appreciated.
Kind Regards.

RiTCHiE007
  • #2
Hi All,

I wonder if you may be able to help. This morning we discovered one of our S7 phones was a black screen with solid blue light. It seemed completely unresponsive to touch, wouldn't wake. etc. The home, volume and power buttons seemed to do nothing. I plugged the phone into the computer, it didn't pick up a USB device.

Phone is stock from EE in the UK. No custom anything. Model: SM-930F 32GB.

EE and Samsung couldn't suggest anything to help.

We tried Power + Volume Down - This results in one of the following;
A (A battery with the current fill %) this happens when plugged in
B (Samsung Galaxy S7 powered by android) loading screen which then cycles or returns to a black screen with solid blue LED

We also tried Power + Volume Down + Home button. This does load the Warning screen about using a custom OS.

We have next day replacement warranty on the phone, i don't need to fix this phone.

We only want to try and recovered some data and photos

Any help appreciated.
Kind Regards.


Hi, try turning off the App Power saving mode!! i had these problems also and it was caused by a app that cant handle the always on setting so when you use that app and then turn the phone in standby it will cause the freeze/black screen
  • #3
Were you ever able to fix this problem? I just had it happen to me and I'm in the same situation.
  • #4
This just happened to me. After an hour spent with tier II tech support, no progress.

You need to let the phone die completely. Once it's dead (and the blue light) is no longer dead, plug the phone into an OEM walk charger. In my situation,my s7 edge would vibrate to recognize the charge, than reset - before it could even build up a charge (so I thought). I left it alone for an hour or so, and amazingly, it booted up like normal.

Good luck!

  • #5
I have this problem. How long will it take the battery to drain from fully charged with just the blue light on.
  • #6
This just happened to me as well. I hope draining the battery works. This occurred when my battery drained and the phone turned off. When I tried to turn it back on after letting it charge for a few minutes it looked like it started to boot, then went to a black screen with a solid blue light. No button combination has any effect.

EDIT: Waiting until the battery died and then attempting to charge the phone has had no effect. No combination of keys has an any effect, either.

EDIT #2: I've taken my phone into the Verizon store. They tell me it's an issue with software and the phone is dead. They said this is "rare". Considering what I see here, I can't say how rare I find it. I have insurance, so they're replacing it, but now they're not keeping up their end of the deal on when the replacement phone will be delivered.

Last edited:
  • #7
Flash it!

I had the exact same symptoms. What did the trick for me was draining out the battery and then fully charging it, WITHOUT TURNING ON the phone. If you do turn it on, you need to drain it out again. When the phone was fully charged I booted up the download mode and flashed the stock firmware with Odin. That was it, my Galaxy S7 was fully functioning again.

Hope this helps someone out there.

Deleted member 5013759

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  • #8
Just experienced kinda the same problem.
S7 died overnight on the charger. I was lucky to wake up on my own.
Just blue led.
I let it drain out over the day so it turned off (vol- + power no working).
Charged it a bit and try to go to recovery: loaded recovery but completely frozen.
I let it drain again and recharged it after it turned off.
Then I went to DL mode and reflashed latest carrier stock rom. AP. CP. BL. CSC. All.
Flashed fine! After rebooting it said "erasing...", rebooted and is back to the blue led only.
Strongly suggesting a hw issue at this point.
I'll let it drain again, fully recharge it, flash a non branded stock rom. If that wont work i'll probably need to bring it to my carrier on monday. Too bad its friday...

//Phone is r.i.p. even after a re flash of stock fw with full battery it only boots to blue led.

//Phone even deader. No more response in any way.

(some time later)
//Just received the repair report. The mainboard and some minor components were replaced under warranty even though my phone was rooted. Good thing for me it never turned on again.

Last edited by a moderator:

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Source: https://forum.xda-developers.com/t/s7-black-screen-blue-led.3427047/

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