Develop Bugs

[Q] Back/Return capacitive button not responding.

Hey guys, just wanna ask what should i do with this issue. I've had my phone for about 3.5 months now and I just started having this issue this morning. I haven't dropped my phone in any kind of way (no water damage or anything). When i woke up this morning i was trying to to tap it, but it just wont work. I rebooted my phone to TWRP and the back button is working just fine. I thought there was just something wrong with the rom i was using (wicked v5.1, its awesome btw) so i wiped my phone and re flashed it, but it didn't fixed it, I tried flashing a different rom but the results were still the same. Then i thought that its probably because of my screen protector (iloome Tampered screen protector) but then again,I've had the screen protector on for a very long time already, and i never had an issue pressing the menu and back button.

For clarification, which is not working?
You mentioned you tapped the screen and nothing happened.
Is the screen not responsive to touch?
You mentioned that the back button works in recovery.
You also mentioned you never had issues with back and menu buttons.
What is not working, and is the issue intermittent?

hello, thanks for the rep.
Biker1 said:
For clarification, which is not working?
You mentioned you tapped the screen and nothing happened.
Is the screen not responsive to touch?
You mentioned that the back button works in recovery.
You also mentioned you never had issues with back and menu buttons.
What is not working, and is the issue intermittent?
Click to expand...
Click to collapse
Im talking about the capacitive back button, and when i mentioned that it works in TWRP, im specifically talking about the capacitive button, not the on screen buttons like on nexus devices. And it also seems to work sometimes if i pressed on it hard enough while its connected to my charger.

Beelzebub24 said:
Im talking about the capacitive back button, and when i mentioned that it works in TWRP, im specifically talking about the capacitive button, not the on screen buttons like on nexus devices. And it also seems to work sometimes if i pressed on it hard enough while its connected to my charger.
Click to expand...
Click to collapse
Hmm....
So the back capacitive button is working intermittently.
Sounds like a possible hardware issue.
I know you don't want to, but to rule out the protector, one would have to remove it, but that canbe sa last resort.
If all else fails to resolve issues, and you have insurance, you'd have torremove it anyway. Even if under Samsung warranty and no insurance.
- you can try the setting that's used for gloved hands which increases screen touch sensitivity. I forget it's exact location, but easy to find out.
- you can check if this is a known issue, etc.
- try wiping cache and dalvik cache in Recovery again

[Q] Note 8.0 N5110 menu, home, and back buttons non-functional

I have a Note 8.0 N5110 that has a strange problem which I don't really how to troubleshoot. When I am using it, the screen will go off just as if I short pressed the power button. I'll press the power button and swipe the screen to unlock. Everything is just as it was when the screen went off, but now the menu, power, and back buttons are non-functional. There are no lights or haptic feedback when I press them. My device was previously rooted before the 4.4.2 update and I had to use odin to install the upgrade. The issue didn't start for a couple of weeks after the update. Once the screen blanks and the buttons become non-functional, minutes later they will start working again; however, at some point, the screen will blank again and the cycle repeats. I have restored to factory settings with no luck resolving the issue. In fact, the screen will blank while I'm still in the setup phase. I really don't know what to try next to resolve this problem and my device is pretty much unusable at this point. Any thoughts or suggestions as to what I could try to fix this? Thanks in advance for any help - Jeff Gaiche

jgaiche said:
I have a Note 8.0 N5110 that has a strange problem which I don't really how to troubleshoot. When I am using it, the screen will go off just as if I short pressed the power button. I'll press the power button and swipe the screen to unlock. Everything is just as it was when the screen went off, but now the menu, power, and back buttons are non-functional. There are no lights or haptic feedback when I press them. My device was previously rooted before the 4.4.2 update and I had to use odin to install the upgrade. The issue didn't start for a couple of weeks after the update. Once the screen blanks and the buttons become non-functional, minutes later they will start working again; however, at some point, the screen will blank again and the cycle repeats. I have restored to factory settings with no luck resolving the issue. In fact, the screen will blank while I'm still in the setup phase. I really don't know what to try next to resolve this problem and my device is pretty much unusable at this point. Any thoughts or suggestions as to what I could try to fix this? Thanks in advance for any help - Jeff Gaiche
Click to expand...
Click to collapse
Couple questions.....do you have a case or screen protector on it? Sometimes these can interfere with the sensor and cause these type of issues.

I do have a case on the device. It's been cased pretty much since I purchased it. I guess it can't do any harm to remove it from the case, just to see if it's possibly interfering with a sensor somewhere. The issue does seem to have been sporadic at first. I'll give that a try. Thanks for the suggestion -- Jeff

jgaiche said:
I do have a case on the device. It's been cased pretty much since I purchased it. I guess it can't do any harm to remove it from the case, just to see if it's possibly interfering with a sensor somewhere. The issue does seem to have been sporadic at first. I'll give that a try. Thanks for the suggestion -- Jeff
Click to expand...
Click to collapse
Was just a thought. Otherwise it might be a defective sensor that has to be replaced. Not really sure.

I had the same issue. In my case the buttons still worked if I used the spen. I went back and wiped both the cache and Dalvik Cache*and it resolved the issue.
Sent from my GT-N5110 using XDA Free mobile app

screen can't turn on without force reset (P600)

I bought my device (P600) a few month ago,
and suddenly (without changing rom/karnel or doing root) i got a big problem -
when i push the button that close the screen(turn off the screen but the device is still on) or if the screen is turned off automaticly, the screen stay off forever. Even pushing the power button doesnt turn on the screen.
The only way to turn the screen on again is to reset the device (by pushing the power button long press).
I almost sure that the problem is a hardware problem even that it's look like a software problem because after i saw the problem i changed the rom and the karnel to other option to check if the rom/the karnel is the problem and the problem didnt solved.
Someone have a clue which element make the problem?
Thanks (and sorry for my bad english)

shahartal said:
I bought my device (P600) a few month ago,
and suddenly (without changing rom/karnel or doing root) i got a big problem -
when i push the button that close the screen(turn off the screen but the device is still on) or if the screen is turned off automaticly, the screen stay off forever. Even pushing the power button doesnt turn on the screen.
The only way to turn the screen on again is to reset the device (by pushing the power button long press).
I almost sure that the problem is a hardware problem even that it's look like a software problem because after i saw the problem i changed the rom and the karnel to other option to check if the rom/the karnel is the problem and the problem didnt solved.
Someone have a clue which element make the problem?
Thanks (and sorry for my bad english)
Click to expand...
Click to collapse
I'd bet money on it being a backlight issue.
Test it again in a well-lit room with a bright lock screen wallpaper, something with a lot of bright color. Once the screen turns off, wake the device and look carefully to see if you can see anything. You might have to tilt the screen, but you should see a very faint, dark image.

blindmanpb said:
I'd bet money on it being a backlight issue.
Test it again in a well-lit room with a bright lock screen wallpaper, something with a lot of bright color. Once the screen turns off, wake the device and look carefully to see if you can see anything. You might have to tilt the screen, but you should see a very faint, dark image.
Click to expand...
Click to collapse
Amazing that's was the problem!
There is a way to fix it? What is the component that causes this problem?
thank you so much!

shahartal said:
Amazing that's was the problem!
There is a way to fix it? What is the component that causes this problem?
thank you so much!
Click to expand...
Click to collapse
Unfortunately I don't know of any solution other than sending it in for warranty coverage or replacing the screen yourself.
I've seen a couple of other posts on XDA involving the same issue, but never saw a solution. I've even seen this issue a couple of times IRL (not on my device, thankfully) and have not been able to find a solution. The two times I've seen this issue, the backlight level could not be adjusted, either. Whether it was set to automatic or manual brightness, it would never adjust, the backlight was locked at a constant level, until the screen turned off, and then the backlight would NOT come on again until the tablet was restarted. Reflashing stock firmware and doing a factory reset did not help, either. On one of those devices, the backlight DID start working again for a while after a manual wipe of internal storage, but only until the tablet was restarted, and I think that might have been a coincidence, I was not able to replicate that again.
So in short, I'm afraid I don't have a good solution other than hardware repair/replacement via warranty.

this has just happened to mine - will have to send it into repair, but it had CLEAN ROM installed so they might argue re the Knox trigger - really annoyed about this!

[Q] Touchscreen only works in power menu?

Hello,
I just got a nexus 7 2013 that had a busted screen. It still showed data between the huge shatter, and didn't respond to my attempts to unlock it by swiping. I assumed it was just a bad screen and bought a replacement and installed it today.
The display worked, but the touchscreen didn't seem to be responding to me trying to swipe to unlock. I eventually figured out that although I couldn't unlock it, the dialogue menus from long pressing the power button did work! Well, some, anyway. I can change sound modes, airplane mode, and access the power off dialogue, but am only able to select cancel from the two options, though ok is not grayed out. I can also click anywhere outside the dialogue and it will back out of it, leading me to assume that the screen's hardware is intact and functioning.
I then hard reset it via stock recovery and am now at the welcome screen prompting a language selection with the big right arrow, unable to press it but still able to interact with the power off and cancel options of the power menu.
Recovery says its running KOT49H.
I've used NRT to reflash the same build from a stock download, and I'm still stuck at the same spot.
What the heck can I do?

myleskeller said:
Hello,
I just got a nexus 7 2013 that had a busted screen. It still showed data between the huge shatter, and didn't respond to my attempts to unlock it by swiping. I assumed it was just a bad screen and bought a replacement and installed it today.
The display worked, but the touchscreen didn't seem to be responding to me trying to swipe to unlock. I eventually figured out that although I couldn't unlock it, the dialogue menus from long pressing the power button did work! Well, some, anyway. I can change sound modes, airplane mode, and access the power off dialogue, but am only able to select cancel from the two options, though ok is not grayed out. I can also click anywhere outside the dialogue and it will back out of it, leading me to assume that the screen's hardware is intact and functioning.
I then hard reset it via stock recovery and am now at the welcome screen prompting a language selection with the big right arrow, unable to press it but still able to interact with the power off and cancel options of the power menu.
Recovery says its running KOT49H.
I've used NRT to reflash the same build from a stock download, and I'm still stuck at the same spot.
What the heck can I do?
Click to expand...
Click to collapse
I would assume that the new digitizer is still bad. There are lots of them on sale on Ebay where the seller would assure the merchandise has been "tested" before shipping. In reality, they might not be. If you happen to have one with spotty functionality, there's nothing you can do with the software to cure it. It would not respond in some areas, period. If you only replace the digitizer instead of the whole LCD/touchscreen assembly, chances are you have a partially bad one. I've never come across one good one myself.

Touchscreen Occasionally not responding

Greeting,
I have a weird issue where occasionally after I unlock my phone, my screen doesn't respond to touches.
The phone works and responds to physical button presses but not touch.
Not sure exactly when it started happening but I've noticed this since last week.
Any idea what might be causing this?
I'm running Android Pie 52.0.A.3.202.

Sydrox said:
Greeting,
I have a weird issue where occasionally after I unlock my phone, my screen doesn't respond to touches.
The phone works and responds to physical button presses but not touch.
Not sure exactly when it started happening but I've noticed this since last week.
Any idea what might be causing this?
I'm running Android Pie 52.0.A.3.202.
Click to expand...
Click to collapse
Please upgrade to the newest firmware.

Sydrox said:
Greeting,
I have a weird issue where occasionally after I unlock my phone, my screen doesn't respond to touches.
The phone works and responds to physical button presses but not touch.
Not sure exactly when it started happening but I've noticed this since last week.
Any idea what might be causing this?
I'm running Android Pie 52.0.A.3.202.
Click to expand...
Click to collapse
Got the same issue on 52.0.A.8.50. Usually opening the app drawer then hitting back solves it - otherwise none of the virtual buttons work.

Searching the web it seems touch screen issues are pretty common on this phone. I'm a bit surprised there isn't more being said here about it. Some experience delayed response, dead areas and no response at all. I have all those issues. Yes I am on the latest firmware. I bought the phone used with a cracked screen. I checked it out and everything seemed fine. I didn't use the phone, just set it aside til replacement screen came. I should have used the phone to thoroughly check it out but didn't want to go through the set up process as I was thinking of B/L unlock and root. New screen came, put it on and seemed to be working fine then screen would be unresponsive. I did factory reset, software update, software repair, went into settings and made sure sure everything was good there, nothing helped. The center of the screen (it's low and a bit off center) is pretty much dead. To open launcher I have to touch and hold near the top of the display. Touch and hold apps is tricky. Usually the app just opens. When I do get it to hold, I can't drag it anywhere. Also, icons in the drop down menu cannot be rearranged or edited. I can swipe up/down, side to no problem. Whenever touch goes dead completely, the home, back and minimize buttons go grey. Tapping the power button gets them back functioning again. . Function test fail. Free draw lets me make a few seconds of scribbles then freezes. The x and rectangle block draw does the same. Tapping power button does nothing to unfreeze either. The color test pass even the block one where you toggle on/off sections of the screen in blocks. It's really weird. First impression would lead me to the screen but it really acts like a software issue. From what I've read so far this phone uses two different display drivers. I not seen anything on how to change that and it would more than likely mean B/L unlock and root, which I'm not against doing. I would just like to know definitively if it's hardware or software. Any input would be greatly appreciated.
Thanks

bobsright said:
Searching the web it seems touch screen issues are pretty common on this phone. I'm a bit surprised there isn't more being said here about it. Some experience delayed response, dead areas and no response at all. I have all those issues. Yes I am on the latest firmware. I bought the phone used with a cracked screen. I checked it out and everything seemed fine. I didn't use the phone, just set it aside til replacement screen came. I should have used the phone to thoroughly check it out but didn't want to go through the set up process as I was thinking of B/L unlock and root. New screen came, put it on and seemed to be working fine then screen would be unresponsive. I did factory reset, software update, software repair, went into settings and made sure sure everything was good there, nothing helped. The center of the screen (it's low and a bit off center) is pretty much dead. To open launcher I have to touch and hold near the top of the display. Touch and hold apps is tricky. Usually the app just opens. When I do get it to hold, I can't drag it anywhere. Also, icons in the drop down menu cannot be rearranged or edited. I can swipe up/down, side to no problem. Whenever touch goes dead completely, the home, back and minimize buttons go grey. Tapping the power button gets them back functioning again. . Function test fail. Free draw lets me make a few seconds of scribbles then freezes. The x and rectangle block draw does the same. Tapping power button does nothing to unfreeze either. The color test pass even the block one where you toggle on/off sections of the screen in blocks. It's really weird. First impression would lead me to the screen but it really acts like a software issue. From what I've read so far this phone uses two different display drivers. I not seen anything on how to change that and it would more than likely mean B/L unlock and root, which I'm not against doing. I would just like to know definitively if it's hardware or software. Any input would be greatly appreciated.
Thanks
Click to expand...
Click to collapse
Maybe the Screen Connector wasn't 100% clean.
Or not only the screen is damaged.
I heard that the touch problems are mostly fixed with PIE. The closed source clearpad touch driver is..... Hoping Q gives us an further updated driver.
You still get sometimes ghost touches on higher workload or if the keyboard app is slow, but if you have dead spots the hardware sounds damaged.