[Q] black screen - Defy Q&A, Help & Troubleshooting

i freeze some services with Titanium Backup and now
i having black screen, i can recive calls. but cant do nothing else,
what i can do?

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[Q] Sudden screen black out but phone is on

I am having a problem with my Galaxy SI-9000 screen. It suddenly goes black and have to pull the battery to get back the screen. However when the screen is black the phone is still working because if I give a call the phone rings but the screen is black and can't see any thing? This started happening from yesterday, since then it has happened twice what may be the problem?
I am testing an application I have written(for battery use) and it is accessing the GPS and the MIC every one min.. can this have any relation with the sudden screen black outs?

Notification lights work fine on my G2, but not on another. Any ideas?

I have the exact same phone as my partner. Both the same OS, software version - everything. The only difference is that I can't get notification lights to work on her phone for things like SMS, WhatsApp etc.
If I choose a light colour in WhatsApp on my phone it works - flashes, works fine. Do the same on hers and she gets no light whatsoever. I have set our phones up to have exactly the same settings, neither of us has any special apps installed (like Light flow) and pretty much all our system settings are exactly the same. Her LED toggle is switched on the same as mine and she is using the same SMS app. Neither of us has any rogue-looking apps installed. We both have the same SMS client and all apps are up-to-date.
Does anyone have a clue what could be going on here? Her light definitely isn't faulty as it works when someone calls - flashes green, lights red when charging and blue when she double-taps the screen to unlock.
I'm all out of ideas now. She is not wanting to do a full restore.

Green screen while scrolling

Guys..
I rooted my s5.
Removed bloatware.
Nova launcher
I started having this weird green flashes whenever I interact with the app drawer.. Or whenever I press menu.
A frnd told me this green screen thing is actually a screen pblm as he has seen such in Nexus too.
I'm really worried if that's a hardware pblm.
I don't mind resetting the fone but I don't want to root agn.
Is there any way where I can restore fact setting but not lose root..???
Galaxy S5 LTE

Screen Issue

Hello I have a stock moto x that has never been modified and I am having an odd issue. The screen turns black randomly but the phone still responds to touch and is still functioning. Active display works and will show in screen as well as the lock screen on occasion. The moto splash screen and recovery work ans show up but as soon as the boot animation starts it flickers and turns black. What is the problem. I was planning on reinstalling the firmware and a stock rooted rom to see if that will fix the issue. What could I do?

Black screen

Hi Guys,
How to find out which application causes black screen and making the phone unresponsive.

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