Database Users

[Q] samsung galaxy s4 screen didn't turn on after screen lock.

galaxy s4 gt i-9500
android version is 4.3 everything is fine but when i lock the phone and again press the power key its screen didn't turn on,
back button's light is on...and it is also charging...
when i restart the phone everything is alright untill i press the power key to lock the phone.
please help me....
samsung service man is not sure for this problem but saying its problem in my motherboard...they are asking for replacement of motherboard.
XDA can you give me solution to this problem?

[Q] Samsung Galaxy S5 Strange Problem.. Look Please

My Samsung Galaxy s5 have a big problem . Have moments when is working perfect( no lag, no display problems), but have moments when it have lag and freze for 1 minute and black screen after, after i press power button the screen is black . If a press more than 3 times home button phone restart.LOOK AT PICTURES
I do factory reset .
The phone is original , no fake.
Please ansewer ..

[Q] problem with k 14 dr ketan in note 3 n900

hello
i install k14 in my note 3 n900
Sometimes that i dont use my phone and for few hours
after that when i use after few hours
button is not working
and my screen is black
when i press home key or power key Event does not occur and my screen is black
but my led light is blanking
i had to turn off my phone and re start my phone
please help me to fix my problem

[Q] when lcd light off r sleep mod my fone off need help plz

friends i face a strange problem in my s4 i9500 problem is
all fone work ok but when lcd lights off not on again with power button
auto lights off r going to sleep mode withe power button .fone work ok but lcd light not on again with power button

try entering in safe mode.
-turn of phone
-turn it on again and keep tapping the menu button while it is booting
-it should vibrate and start in safe mode
then try if the problem still persists.
if not, its propably one of your apps causing the problem.

Help Samsung Galaxy S5 turned off and won't turn on again.

Guys come here to ask for help because I am a layman when it comes to phones from Samsung , the situation is as follows my galaxy S5 of a sudden stopped working , at least not start / on , I tried various methods but I'm limited because , the device does not go into recovery mode or in download mode , since removed the battery and waited a few seconds, reinsiro the battery on the device, hold the volume button down / up + Home + Power button, the phone responds with a very low vibration and turns on the LED light , but nothing happens , the screen is turned off, the same with charger in making vibrates and lights up the LED light , when connecting to the PC the same thing it vibrates and then lights the LED light but does not recognize the unit if anyone is having the same problem or have experienced the same problem any help is welcome , thanks!
obs : Stock ROM without root and installed recovery .