Screen issues? - Nexus 4 Q&A, Help & Troubleshooting

This morning, my screen wouldn't turn on. I felt the vibration when I held down the power button and managed to power off the phone by remembering where the buttons were. I turned it back on and it was working again. Later in the day, when I tried to unlock the phone, there were black and white lines all over the screen for a few seconds. Is anyone else having problems like this?

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[BUG?] Screen wouldn't turn on

I don't know if I pressed the lock button while the active screen was activating or what.. but any time I tried to unlock the phone afterwards i was met with black screen.. but still got haptic feedback when pressing the area of the screen where the nav bar is.
i then held down the lock button to get the power menu (which i still couldnt see due to the black screen), tapped where i was guessing the power down button was, and then tried turning it back on, which worked.
hasnt happened since but it kinda scared me that it even happened in the first place and kinda pissed me off that a bug like this happened without any rooting ish being done.

Display turns on, after turning it off...

Hi, the problem is this.. I am using Note, then I press power button to turn it off, and it immediately turns on... And pattern lock is not activated...
It is not happening all the time, but 2 or 3 times per day...
Driving me crazy...
Have you got some ideas??
Thanks...
Power button is a known weak point. Test to see if you can make it happen by pressing it in a particular way.

S5 Neo, screen goes black.

Hey!
I have an S5 Neo at work, and earlier on Friday morning it worked great, but then the screen started to go black, first it was only random and it would go back on again. But soon i had to try remove the battery and restart it, but nothing happend. After waiting some time the screen was back on again.
So when I got home I tried my best and got the screen working, did a backup and factory reset. I was super happy and tought that it had helped, because the screen come on right away. But as soon as I put the backcover on the screen started to flicker and then turned all black again.
I managed to get it working by pressing quite hard from the rear around the camera and the simcard holder. But only temporarily.
One other thing that does seem to work is to remove the battery, hold the power button pressed for some time and then start it back up, but as soon as i press in the upper corners the screen flickers, and if i press pretty much straight on the samsung logo it goes completly black and wont turn on, until I have had the phone turned off and pressed the power button for some time.
I understand that this must be something wrong with the display assembly(loose flex or solder joint in flex) or maybe even motherboard, is there anything I could try and do at home, or is my only option to send it away and get it fixed?

Screen goes black and unable to come back on?

Hey guys, I've had this problem twice now where my screen goes black and can't come back on I've tried calling my number but nothing happens, my phone went out of battery then the screen came back on. Anyone else having this problem and know how to prevent it from happening again?
hold volume buttons + power to hard reset when that happens. Try factory resetting and removing any cases that are blocking the sensors.

Problem with a friends S5. The screen keeps going out.

When I turn the phone on the screen lights up for about a half a second and show the logo. The phone fully boots and all buttons work. When I push the power button to turn the screen on it does the same thing. I can see that its at the home screen. There is no water damage and the phone hasn't been dropped. Sometimes I can get it to boot up with the screen working right. Is this a common problem? What is the cause of this, bad screen, mainboard, software?
Thanks

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