topic Re: Black screen in C Series

Black screen

Elisheva74 — Thu, 28 Sep 2017 03:44:16 GMT

Hello there,

Can someone please, please help me outhere.

My Xperia C4 unit is going black right after I am making calls, and also from time to time when it's rings I can't even see the number, because it's still having black screen. I try calling this *#*...options.. But it would tell me the message "wrong mmi" or so.

What to do about black screen during calls out or in?

Thanks

Re: Black screen

Qatrium — Thu, 28 Sep 2017 04:25:50 GMT

@Elisheva74

Do you have a screen protector or a case installed that is covering the proximity sensor area? It's marked with the number 1 in this picture:

Re: Black screen

Elisheva74 — Thu, 28 Sep 2017 09:47:50 GMT

Hello there "Moderator",

Thanks for replying, but no I do not have screen protector on my phone, and the case that I have is not covering the proximity sensor.. Every time I making a calls out, its becomeing dark/blank/black.. The screen... And as I mentioned before I dont even see who's calling in because of this reason.

Re: Black screen

Qatrium — Thu, 28 Sep 2017 10:52:08 GMT

@Elisheva74

Dial this code *#*#7378423#*#* then tap on Service tests -> Proximity switch. It should say "OFF" and will turn "ON" when you cover the sensor.

Re: Black screen

Elisheva74 — Thu, 28 Sep 2017 11:36:41 GMT

Hi again,

Thank for replying. I really appreciate it.

So I tried the options with the sensitivity... And the numbers you suggested. When I cover it, it's keep telling me.. DETECTED, and it's counting numbers up or down when it uncover.. I don't really have the option there as to On/Off switch.. .I don't see where this is

Re: Black screen

Qatrium — Thu, 28 Sep 2017 11:43:44 GMT

@Elisheva74

Are you sure you chose the Proximity switch test and not the Ambient light sensor test?

Re: Black screen

Elisheva74 — Thu, 28 Sep 2017 11:46:57 GMT

Hi again.

I really appreciate for replying.. So I tried the options with the numbers as you suggested... It went to settings.. And so it's said "proximity sensitive detected" was when I cover it...and it was counting numbers down also saying Cross talk.., but when uncovered it's counting up.. I don't see the option as to switch on/Off....not sure where it is..:( please let me know.

Re: Black screen

Qatrium — Thu, 28 Sep 2017 11:50:36 GMT

@Elisheva74

It's not a switch, it's a status if the sensor detects your hand or not.

If you go to Settings -> About phone -> Diagnostics -> Test -> Ear proximity, can you pass that test?

Re: Black screen

Elisheva74 — Thu, 28 Sep 2017 11:55:59 GMT

I tried this same diagnostics last night...

But for some reason it would not pass ear test.... May be I should have used the headphones for this option?

Re: Black screen

Elisheva74 — Thu, 28 Sep 2017 12:05:25 GMT

I tried ear proximity...

Looks like it passed that test..

But screen still goes black on calls.

Re: Black screen

Qatrium — Thu, 28 Sep 2017 16:54:20 GMT

@Elisheva74

Ok, now try rebooting in safe mode and check if the problem persists.

Re: Black screen

Elisheva74 — Thu, 28 Sep 2017 17:31:15 GMT

Yes, I restarted it.

But still same thing happening. ;(

Re: Black screen

Elisheva74 — Thu, 28 Sep 2017 17:48:58 GMT

It's even goes black when I dial to check the Voice Messages...and I can't press no buttons after that, because I can't see nothing,,, cause of this black screen ;(

Re: Black screen

Qatrium — Sun, 01 Oct 2017 08:14:24 GMT

@Elisheva74

I'm out of ideas, one last thing we can try is performing a software repair using Xperia Companion. This will do a clean installation of the latest firmware and will also wipe your internal memory. Don't forget to backup using Xperia Companion, but preferably without adding apps or settings to the backup.

Follow the steps given in blue links, and keep us updated.