Database Users

Screen lock does not lock during a call

Hey!
You know how the g2 locks the screen when u are in the middle of a call, so u wouldn't accidentally push a button with your cheeck/ear? Well sometimes (and quite often too) it stops locking, probably thinking that I moved the phone away from my face.. and the it relocks it the next second.. well most of the times it unlocks, I push the mute button or I hang up alltogether.... its getting rlly frustrating, and I was wondering if anyone is having the same problem..
Sent from my T-Mobile G2 using XDA App

Are you outside or in bright light when this is happening?
The proximity sensor (the thing that controls this function) is in the upper left hand corner of the phone, above the display area. Basically if light hits it, on comes the screen. No light, no screen. Put your phone on a desk/table and make a call to voice mail or something, and then move your finger over the proximity sensor. Then move it away... You should be able to make the screen go on & off by passing your finger over the sensor. If this does not work, then perhaps your sensor is bad.
Some have had problems when making calls outside, because the light gets in between their face and the phone, hits the sensor, activating the screen.
Steve Jobs would tell you to hold the phone in your left hand. (It works better that way.)

Thanks! That's helpful.. I tried the finger test and it seems to work fine... when I'm holding the phone next to my ear with the sensor TOUCHING my ear, ii flickers on and off =S
Sent from my T-Mobile G2 using XDA App

S4 screen stays off , please help.

Hi,
I'm hoping someone can help me determine if I have a defective phone or no. Basically what happens is that when I receive a call and I bring my phone to my ear the screen turns off (as it should ) but when I move the phone away from my ear the screen stays off and I have to press the power to bring it back on. Mind you this started happening 2-3 weeks ago, before it was fine bring phone to face/ear screen turns off , move it away from face the screen would turn back on.
Now logically it seems the proximity sensor might be having issues but it works fine when i bring it to my ear so maybe that's not it?
This is quite annoying whenever I'm on a call and have to press numbers, end calls, go back to what i was doing I have to continuously press the power button. I googled these issue and a few people are reporting the same thing. but i didn't see any solutions or answers.
Thanks for any help.

Ive had the same thing happen. Go to Settings > My device > Call Settings. Look to see if the option to "turn off screen during call" is enabled/disabled.

I feel like you have a a custom rom, or maybe just rooted with some cpu clocking going on. whats usually going on is your phone is going into a deep sleep where it's energy is to low to even force itself to wake up.. but it's still alive not dead, just unresponsive (I feel like I'm talking about malnourished human beings). don't let your phone get too weak, set your minimum cpu speed a little higher than what it is now, and make sure it gets more complex carbs.
Sent from my Galaxy S4 using xda app-developers app

soraxd said:
I feel like you have a a custom rom, or maybe just rooted with some cpu clocking going on. whats usually going on is your phone is going into a deep sleep where it's energy is to low to even force itself to wake up.. but it's still alive not dead, just unresponsive (I feel like I'm talking about malnourished human beings). don't let your phone get too weak, set your minimum cpu speed a little higher than what it is now, and make sure it gets more complex carbs.
Sent from my Galaxy S4 using xda app-developers app
Click to expand...
Click to collapse
I have not changed anything on the phone, it's stock and simply have accepted the carrier's OTA updates and that's it.
And also I should have mentioned that I did check the call settings, I have the "turn off screen during call " enabled, before posting here I had that option disabled but then the screen would stay on during a call, which is worse cause then the phone gets hot near your face and don't want a bright light next to me.
Also I did a hard reset and factory wipe and nada, still doing the same thing .

same
I have the exact problem with my s4. I will post any findings.

Got It
For me, it was dust inside the phone in front of the sensor.
How to fix
1) Remove back of phone along with the battery and GSM and SD cards.
2) Remove 4 screws around the back of the speaker. Then pry out ward from the battery compartment and pop out the speaker housing.
3) Remove 5 screws from the rest of the back. Use your thumb nail and start at the bottom and work around the phone to pry appart.
4) Remove 1 screw from the camera and sensor housing. Pry the metal cover off by starting at the top and pry upward.
5) Take the camera out by on snapping the bottom snap plug with a flat head tweaker. Then remove front facing camera.
6) Lastly take out the sensor snap plug and tilt the sensor out. Blow air inside the housing .
7) reassemble.

proximity sensor issues

wanted to know if im the only who is having this issue with phone calls. even without a case when i move the phone away from my ear it doesnt respond, i still get the black screen. i press the power button but the screen just flickers and doesnt do anything at times. is it the rom? my phone? i also faced it into the light and sometimes it comes on sometimes it doesnt.

figured it out.... went through 4 screen protectors and got the cut out right for the last one. seems the proximity sensor is blocked by the screen protector. almost listed my phone on ebay. haha

[Q] Proximity Sensor Driving me nuts

Hey
My proximity sensor keeps stuffing up. When I make a call, and put the phone to my ear , it turns off the screen but when I release the phone from my ear, the phone screens remains off and I cannot access the phone untill the other party hangs up
This is a real pain when they do not answer and their voicemail comes on and I need to leave a message. I have to turn off my phone when this happens
I have fixed this but it only remains fixed for about a day
I have cleaned it, blown in the area where the proximity sensor sits with a straw ( did not have air compressor can) worked for about a couple of days then it stuffs up again
Not sure what the hell I can do to fix it now.. Buy a new sensor? I have a screen protector but there is a cut out where the ear goes

Go into settings, accessibility, then tick 'The power key ends calls' It won't turn off the screen.

I had that problem, I took the sensor out and wiped it, seems to be fine now. I saw a video online to help me, not got the link readily at hand though

[QUESTION] S8 display randomly lights on and vibrates during call

Hi, anyone have issues with galaxy s8 when making/receiving calls ? My S8 was pre-ordered and on the first day of usage im faced with this issue, when making call or receiving phone randomly lights on display (once) and genlty randomly vibrates (as you press home button or nav button), then im take away phone from ear and put it back to ear display turns off, sometimes it keep turned off as normaly but sometimes it lights on again and vibrates, so i have to do previous steps or if ignore that issue than display turns off after some time and when im take away phone from ear to end call phone is locked and display won't light up until press lock button. Also im noticed that when im lock phone or even take it in hand (fingers touches both curved sides of display) phone also gently vibrates and turns from AOD to lock screen, this issue is also randomly. Some times AOD screen suddenly goes bright and than fades like it should be. After two weeks of chatting with samsung and store support im was send it to "service", they tested phone and after 10 days im received phone with status "no problems detected, software reflashed" but issues still not gone. And im can't replace it with new one because store refuses to replace it and says that they don't replace devices with software issues. Now im stuck and don't know what to do.
P.S. in *#0*# menu proximity sensor ADC values randomly keep changing even if nothing is in front of sensor, values are between 79-125 and when completely put finger on sensor values is 16368

Same issue here. Not sure why.

same for me too, international dual sim version s8

I have little bit different issue related to light sensor. My phone doesn't turn off the screen and locks in a pocket or if I close light screen by hands.
Sent from my SM-G950F using XDA Free mobile app

I have the same issue (also the oversensitive home button issue too).

I have a similar issue. But my screen never lights up. Neither during a call or when on the desk, for example. But during calls it sometimes vibrates as if I hard pressed the home button even though the screen is still off and I haven't pressed anything with my face, nor have I received any notifications. It doesn't seem to happen once every minute either (some phones notify you of every passing mine during a call).
It's not a big deal for me, just kind of curiously annoying.
Sent from my SM-G950F using Tapatalk

Check in settings on ambient display, pocket mode, etc. Or maybe a cache wipe and reboot will solve.
Like Settings-Display-Screen Mode
-Keep screen turned on/off

Thanks to Samsung and Consumer Rights Protection Centre, together we forced store to replace phone. It was a factory deffect, so anyone who has similar problem im advice to replace phone.