Screen goes black when call button pressed
The touch screen was replaced on my Torch. Now when I make or receive a call, as soon as I press the call button the screen goes black (before I even get it close to my ear to talk). Once the call is completed and the end call button is pressed the screen will come back on again. Neither the touch screen or any of the buttons work while the screen is black.
I know there is a proximity sensor next to the led light but it is activated by the call button and not by any proximity. Is the call button in any way connected to the proximity sensor?
- CrackBerry Newbie
12-28-11, 05:38 PM #3
- 4 Posts
So am I. I've been searching the forums and I've seen two different things. 1) people have an issue with the sensor not working and the screen never dims (and people are touching things while on a call, and 2) the opposite, where the screen instantly goes black in a call when it's not close to your face.
It seems to me that everyone keeps saying "tons of threads, you are using a screen protector" and people keep responding with "no, I'm not using one", and no one ever answers the question past that.
Maybe I'm missing something. The sensor never dimming the screen (and it's faulty) seems pretty straightforward, get it fixed. But the second scenario is unanswered as far as I can tell.
What's causing the screen to go black without contact or without a screen protector?
Is this still a sensor issue?
I've had this on three Torches now.
- CrackBerry User
12-31-11, 02:05 PM #5
- 12 Posts
Ive had those exact same problems when I changed the housings on 6 torches until I figured out what it was.......
There are 2 blue screws located at the top left and top right of the LCD slide, located directly underneath the touch itself so you wont see them. When those are not put back into the phone (well in my cases, because they CAN be left out if you choose to leave them out of the phone), I notice when you make a call, the screen immediately goes blank (its sensing that the proximity sensor path is being blocked by an object). When the screws are not replaced, then the metallic piece that the screen "sits" in isn't pressing down close enough to the ribbon, so a section of the metal is actually blocking the sensor.
When that happens, the phone automatically will "think" that the phone is being placed to your head so it cuts out the screen to save battery life and also to prevent any part of your head enabling anything else on the touchscreen whilst the phone is to your ears (for example your ears or cheek touching the touchscreen)
This is what I deciphered as my explanation, but it worked everytime for me
And oh yeah, I'm a cellphone technician by profession
Last edited by 9800wayne; 12-31-11 at 02:08 PM.
- CrackBerry Addict
01-01-12, 07:58 PM #6
- 973 Posts
It should be interesting to know that my 9810 doesn't always go black with the placing of or receiving of each call. It's "some-timey" about doing this. Sometimes it doesn't do it for weeks.
P. S. - My 9810 is also still under its one year warranty. I am thinking of doing a warranty replacement if it doesn't stop doing this soon.
Last edited by tediprude; 01-01-12 at 08:01 PM. Reason: Added P. S.
- 06-06-12, 07:46 PM #11
Remove phone case
I was having that same problem with my 9810. Phone screen going blank when receiving a call or after dialing a number, only to find out that my phone case was covering the sensors. So when making a call I just remove the face part of my case and that solved my problem. I hope this help.