Develop Bugs

HELP: How to prevent screen shut off at call connect

When the phone connects with a call, the screen blacks out.
I only want it to black out with the proximity sensor. I have to push the power button to turn on the screen.
Can someone please help me?

I have hard reset my device. nothing installed, running stock ATT rom and the screen still goes off when the call connects, then turns on when the call is ended.
the proximity sensor is not controlling the screen.
Anyone have any ideas???

SOLVED
I thought I would post the solution I found for this issue.
I removed the screen protector and cleaned the edge between the speaker and screen - that fixed it.

screen shut down when dialling out...

how on earth do you activate the screen? not sure if it is normal, but when i make an outbound call the screen shuts down, and no matter what buttons i press the screen doesn't come back. i guess it makes sense that the touch screen is not on when it is pressed against your face or ear, but i would just like to know how to bring the screen back as it is not all that obvious to me.

shake the screen

The proximity sensor is at the very top of the screen, near the top left corner. Normally, this dims the screen when you hold the phone to your ear and talk. Make sure you are not accidentally covering that spot when you grip the phone. Try calling a number and covering/uncovering the top left of the screen, and you should see the screen come on and off as you do this. There is a little delay, so don't expect instant results. If the delay is more than a second or so, something is wrong. If you are sure you are not covering the sensor and the screen is dimming unexpectedly, the phone is defective and should be returned or exchanged. The screen should always come on during a call when the sensor is uncovered, to allow you do dial additional numbers, hang up, etc.

Dialer bug: screen goes dark, can't hang up

I just got my new AT&T S3 a few days ago, and there's a problem I seem to be having with every single phone call I make or receive.
During the call, the screen goes dark, and none of the buttons seem to be able to wake it up again until the other party hangs up. I've literally had to rip my Otterbox off and yank the battery out to hang up during one call to an IVR system that just wouldn't hang up on its own (I guess I could have pressed the right combination of buttons to force a reboot, but at that point I was in no mood to spend 5 minutes experimenting with different permutations of power, vol-, and vol+ to find the magic combo).
Here's what I think might be happening. Note that I haven't exhaustively spent lots of time debugging it yet, on the theory that if it's a common bug, somebody else already has:
Call begins.
Hall Effect sensor triggered by proximity to face. Screen turned off, touchscreen input disabled.
Display settings ticking away in the background force timeout after N seconds. Ignores the fact that the display is already off, and puts the phone to sleep "for real" (at least, the part handling the UI), neglecting to re-enable the power button first.
I'm done with my call. I move the phone away from my face to hang up (or pull up the keypad to enter a selection). Hall Effect sensor broadcasts intent to turn on screen and re-enable touchscreen, and its intent falls on deaf ears because the phone is officially asleep and ignoring it.
Panic. Press power button. Seemingly ignored (though the phone might be waking up enough to see a note telling it to ignore the button, and going back to sleep without further action).
Anger. Press home button. Press volume buttons. Swear violently, and get really mad.
(other party hangs up; lock gets released, phone is awakened and problem seems to go away)
or...
(furiously press various two- and three-finger combinations of power, vol+, vol-, and home until either the call terminates or the phone reboots)
For what it's worth, the same bug show up if I make a call in my car, but the bluetooth call-control button DOES work, even though the phone itself appears to be a darkened unresponsive brick, and triggering a hangup via bluetooth wakes it back up again. I KNOW this isn't due to Tasker or anything, because I've had this problem literally since I made my first call on the new phone to terminate my Sprint account, when it was 100% stock and virgin.

I had the same problem with my white s3 . Then I changed the screen protector and cleansed the proximity sensor with a dust free cloth and haven't had any problems since
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Well, I found the root of my problem: the S3's proximity sensor isn't a Hall Effect sensor, it's near-infrared... and the plastic shell on my case is yellow, which meant it was reflecting too much near-infrared light back into the sensor and triggering it continuously from the moment the LED turned on. I ended up blackening the plastic that surrounds the sensor using a Sharpie marker, and it solved the problem.

Samsung S3 won't hang up
I have the same problem and found that I can insert earphones to phone to make light come back on. After looking at this forum I also noticed a setting (which I haven't tried yet). It's the 3rd from last under settings. Settings-Accessibility-Answering/ending calls-The power key ends calls.
I'm hoping that will work.

while on call proximity sensor does not work properly?

LG G4 international version.
Any one experiencing while you move the phone to your ear during a call, the screen goes off. But when you remove phone from ear the screen will not come back on. I have tired double tapping screen, using volume keys to activate the screen on again.
Is there a work around or anyone else having this problem?
Thanks

I think it was the glass screen protector, covering the sensor. I will try another one that has the cut out. But after removing the protector it is fine again.

My Verizon version seems to act up about half the time by not turning back on when I pull the phone down. My phone is naked so there's nothing that should be interfering.

Same here. No screen protector.

I had that happen once but it turned out that I had a notification that was causing the issue. When I started the call all was fine but during the call the notification arrived and the screen would not come back on until I pressed the power button. Then I could see the notification and dismiss it and all went back to normal

[Q] Accidentally putting calls on hold

I love the Note 5, but I keep accidentally putting calls on hold when using it in the "traditional" way - putting the phone to my ear.
I've discovered that somehow the screen is coming back to life while I talk - and I'm accidentally touching the "On Hold" virtual button on the call screen in the upper right corner.
I feel a bit stupid even posting this, but the Note 5 is my first Lollipop and phablet experience. I don't remember the "On Hold" button even showing up on my GSIV call screen. Could it be a proximity sensor issue?
Has anyone else experienced this and if so, is there a fix?

Yes, your proximity sensor may be defective. My screen stays off when I hold the phone to my ear.
As a mitigation, you could try keeping your fingers on the side of the phone, off the screen, and lower than where the hold button is; also, hold the phone at an angle, with only the top edge held against your ear.

I have the same problem...the proximity sensor is fine, screen does go blank when on call..but nearly every day, maybe due to angle I hold phone which makes it think I am not on the phone! It keeps going on hold. Any way to resolve? Or any workarounds people have done? Really annoying, sometimes happens 2-3 times on the same call!!!

I am having the same issue. Any fix for this?
Could glass screen protector be causing this?