Samsung Galaxy S5 Back and Recent app keys - Galaxy S 5 Q&A, Help & Troubleshooting

Hello. I have a galaxy S5 that I had to replace the display and digitizer on. Everything works now, but I realized that the recent apps and back keys don't work. They are not lit up, and do not work at all. Is there something that should be connected inside? or is there something that is possibly shut off in the settings? it's not the power saving mode, because I checked all of that. Ideas?

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[Q] Problems with Tasker recognizing orientation change?

I have an S5 which I use Tasker to recognize the phone being flipped face down to turn off the ringer, etc. I know there are other apps to do this, but since I use Tasker for other stuff I was hoping to continue. But, when the phone goes to sleep, it appears that Tasker can not recognize the phone being flipped. If I press the power button and flip, everything works fine, but not when the phone is asleep. Is there a setting I am missing to properly handle this? Any help is appreciated. BTW, the phone is rooted via Towelroot but running stock OS.

[Q] Black screen on samsung galaxy tab 4 problem

I appreciate any responses anyone has to help
Ok so i have my sisters samsung galaxy tab4 ( sm-t230nu ) which she brought to me today.
Her screen went black, lights up and all but it stays black in color. Up down volume buttons work and u can hear them working, power button works, turns screen on and off, TOUCH SCREEN WORKS, on certain areas u can hear the noise it makes when u tap on the screen and apps. I pressed the power button alone for it to restart, it restarts but does not show samsung tab logo or anything at all just lit up black screen. I even went on YouTube to memorize the hard reset sequence of buttons u have to press in order to complete the reset and i did manage to hard reset. But screen is still booting up on a lit black screen. I removed the back cover, unplugged the battery and tried booting it up and still nothing. BTW its full factory, no root roms or anything of the sort. I need help on what could be the problem. Only thing i believe might have caused this was a recent update on the system. My sister said a few days ago it gave her a notification about it and she clicked on yes. I dont know what version of android it had nor which it had updated to. Please help. Tablet is not that old. Thanks. If anything email me directly at [email protected] thanks
Norbertoortiz said:
I appreciate any responses anyone has to help
Ok so i have my sisters samsung galaxy tab4 ( sm-t230nu ) which she brought to me today.
Her screen went black, lights up and all but it stays black in color. Up down volume buttons work and u can hear them working, power button works, turns screen on and off, TOUCH SCREEN WORKS, on certain areas u can hear the noise it makes when u tap on the screen and apps. I pressed the power button alone for it to restart, it restarts but does not show samsung tab logo or anything at all just lit up black screen. I even went on YouTube to memorize the hard reset sequence of buttons u have to press in order to complete the reset and i did manage to hard reset. But screen is still booting up on a lit black screen. I removed the back cover, unplugged the battery and tried booting it up and still nothing. BTW its full factory, no root roms or anything of the sort. I need help on what could be the problem. Only thing i believe might have caused this was a recent update on the system. My sister said a few days ago it gave her a notification about it and she clicked on yes. I dont know what version of android it had nor which it had updated to. Please help. Tablet is not that old. Thanks. If anything email me directly at [email protected] thanks
Click to expand...
Click to collapse
Have you tried getting into recovery or download mode? If those show, it's likely fixable. If you can get to recovery mode, it usually shows what firmware is on it. If that works, trying using ODIN to reinstall that firmware in download mode. If not, it sounds like a hardware problem. If it's not that old, it may be under manufacturer warranty still. Good luck.
Try to reseat the LCD cable, if it doesn't work, you may need to change the LCD. Search Ebay for LCD only or full LCD assembly if you're not comfortable to take out the touchscreen.
https://www.youtube.com/watch?v=aHdh9AITqII
Full LCD assembly
http://www.ebay.com/itm/OEM-SAMSUNG...383?pt=LH_DefaultDomain_0&hash=item4199c6da9f
LCD only:
http://www.ebay.com/itm/Replacement...384?pt=LH_DefaultDomain_0&hash=item2a5057fe10
Norbertoortiz said:
I appreciate any responses anyone has to help
Ok so i have my sisters samsung galaxy tab4 ( sm-t230nu ) which she brought to me today.
Her screen went black, lights up and all but it stays black in color. Up down volume buttons work and u can hear them working, power button works, turns screen on and off, TOUCH SCREEN WORKS, on certain areas u can hear the noise it makes when u tap on the screen and apps. I pressed the power button alone for it to restart, it restarts but does not show samsung tab logo or anything at all just lit up black screen. I even went on YouTube to memorize the hard reset sequence of buttons u have to press in order to complete the reset and i did manage to hard reset. But screen is still booting up on a lit black screen. I removed the back cover, unplugged the battery and tried booting it up and still nothing. BTW its full factory, no root roms or anything of the sort. I need help on what could be the problem. Only thing i believe might have caused this was a recent update on the system. My sister said a few days ago it gave her a notification about it and she clicked on yes. I dont know what version of android it had nor which it had updated to. Please help. Tablet is not that old. Thanks. If anything email me directly at [email protected] thanks
Click to expand...
Click to collapse
If tab has warranty claim warranty. I think this is a hardware issue.

Samsung Galaxy S4 Turns on Automatically...

Hi there I've a Samsung galaxy S4 and I'm facing a problem from last few days.
It works fine but when I shut it down after a few seconds it automatically turns on. it doesn't turning off. When I turn it off it automatically turns back on. Other things work fine.
Any suggestions please.
Your power button is stuck. Gently tapping the edge of the S4 against a table should free it.

Power button issue

Hello guys
So I accidentally dropped my note 4 into water. I dried out my phone completely and everything is working as before except the power button. It was working for a while but then it definitely died but it still does the 'click' sound (might not be so important). Do you think that its replacement would fix it , since I do not have a chance of turning on/of, restarting etc?
Thanks all for answer
You can install apps to turn off or restart your phone through a widget on screen. Although you may need to be rooted.

Screen wakes up all the time

Hey there,
I've a big issue for a few months already.
My S4 jflte always wakes up whenever the screen turns off.
I tried to figure out where it's caused by and when I cut off the soft buttons (home/menu/back) and started the phone, the screen didn't wake up anymore.
As far as I know there is no way to repair this w/o damaging the screen itself.
So could I block the buttons from waking up the screen?
As you can see when a app is opened and the screen turns off automatically and turns on again, the home screen appears and puts the app in the background.
youtube(.)com/watch?v=Bhul9UMJ8l4 (I don't have 10 posts yet so I have to post it this way. Sorry)
Could anyone help me? I've been researching for a long time and found no solution.
Says video not found.
Are you on a stock rom?
The Video is working fine for me. Did you copy the whole link and did you remove the brackets? ( )
I'm on AOSP 6.0.1 Kernel 3.4.110-Alucard-PWR-CORE from JDCTeam.
I tried different ROMs so far (including the Stock) and it's definitely a hardware issue.
http://www.youtube.com/watch?v=Bhul9UMJ8l4
have you been doing full wipes inbetween roms ? if you have then maybe it's a hardware issue.
Yes, I've always done full wipes. I'm pretty sure it's a hardware issue. Is there any way to block the keys from waking up the phone? I usually use the power button anyways to wake up the phone.
You can probably disable the keys altogether. Or maybe just the menu and back key, and leave only the home button functional.
There is no way to do it with that rom yet, but you could use Xposed and Gravity Box.
Most apps nowadays offer inbuilt menu and back options anyway.
Before you try to disconnect any buttons, try to clean the phone. That has solved many problems in the past.
Look for disassemble S4 videos on youtube, and for cleaning use a small paintbrush, or a very soft toothbrush, and Isoprophyl Alcohol(70% clean alcohol, 30% pure water), you can buy that in the Apotheke.
Clean the board an all other reachable electronics. Let it dry, reassemble and see if it helped.
Thanks for the tips, but I've already done that before (twice) without success.
I'm looking for a way to disable the keys from waking up the screen. I've tried it with the key configuration files in the system, but it didn't work.
Example: When I press the home button the screen wakes up. I just want to disable the wake up for all buttons except for the power button.
Does anyone know a app for this? Or a mod for xposed?
There is no actual "wake up" function assigned to the back and menu key. Only the home button has one. So there's nothing you can disable, except for the keys altogether. I already suggested you how to do that in the 5th reply to this thread.
I've found a work-around. I disabled the keys with 'Xposed Additions' while the screen is turned off or locked.
Thanks alot for your help guys!

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