Proximity sensor problem (SMMI test fail) - ZenFone 2 Q&A, Help & Troubleshooting

Hi, I've searched this forum and the Internet in general about proximity sensor problems but it seems like basically every problem that someone else had was fixed by removing tempered glass/screen protectors/cases/covers. I'm having a proximity sensor issue and I'm not using any screen protector or case.
This has happened twice now. Once when I was listening to visual voicemail, once when I was making a call. The screen goes dark and will not respond to any wake commands. Every now and then it will turn on for half a second when I hit the power button but then turns back off again. The first time when I was listening to visual voicemail, I had to hard restart the phone by holding volume up and power. The second time during the call, I managed to hang up the call in the half second the screen came back on, which ended the problem.
Right after that, I tested the proximity sensor using the SMMI test (calculator .12345+=). The test makes you put your hand near the sensor, then away, then near again. During the test, the phone immediately sensed my hand near the sensor except that my hand was nowhere near the sensor and there was nothing else near the sensor either.
I did a reboot and ran the test again. This time, the test finished correctly. The phone did not detect my hand until I actually put it near the sensor.
I'm running stock everything except I do have root(ZE551ML). I'm leaning towards this being a hardware problem and I've only had the phone for a week so I'm well within my replace period with Amazon. Is there a solution to this I'm missing or should I just replace? I'm a firm believer in troubleshooting first. Plus, setting up the phone the way I like again will be a huge PITA.
Thanks.

I would replace. It does sound like a hardware issue, and your better off getting a replacement instead of a possible pain for the life of your phone.

I get the same, and the flickering screen happened once to me after I I have just put a tempered glas protector on it ... removed it and so far no problems, but who knows.
I think the SMMI test works correctly the first time you start it, and incorrectly the 2nd, 3rd etc ... dont think it is a hardware error ...

Hi all, i have a zen2 with this same problem, i think doing sensor calibration can resolve the issue... but i canĀ“t found how to do, by code, or by app...
Any body know how to do calibration of sensor aproximty?
Thanks in advanced!
Ps. I dont have screen os glass protector...

i don't having tempered glass or any screen protector. my proximity sensor is not working. Even i checked .12345+= but it gives error in proximity sensor. what to do? plz anyone?

same problem
Hi to everyone,
I have the same problem with the proximity sensor.
After a device reboot, the simmi test work correctly, but after some hours the test fails.
Someone know as I can calibrate the sensor ??
Thanks

I just fixed mine, cause I was having that issue for a LONG time now.
I actually just stuck a piece of paper in front of the light sensor part of the sensor window on the screen. It's the right side of the sensor window.
To be more clear, a while back my screen broke, so I ordered a screen online and changed it. Ever since then my prox. sensor didn't work, so I couldn't use the keypad during calls (the screen would go black).
My screen still isn't attached properly, so it's just being held in by the floppy protective case I have on it right now. This allowed me to pull the screen away from the phone a bit and slide a piece of paper behind it right in front of the light sensor. As soon as I blocked the light sensor then the proximity sensor started reading properly.
I got the idea because I was trying to clean the screen, thinking that it might just be dust blocking it or something. That didn't help, so I tried cleaning the sensor, but had the calibration test running at the time, and it instantly worked!
So I kept playing around with it and noticed that every time I blocked the right side of the sensor, it worked, but as soon as I removed the brush I was using to clean, it stopped working.
I stuck a piece of paper in, and BOOM, worked just fine.
People might want to build on this and maybe try sticking a piece of tape over the right part of the sensor. I haven't tried it, and since I finally have it working now, I really don't want to play with it too much and mess it up.
Hope this helps anyone else having this issue.

Hi all,
I am using zenfone 2 laser z550kl. Screen blackout during call and did not come up till the call is cut. I changed only the cover of proximity sensor and phone is working fine. Change the small rubber covering of sensor and it will work.
Hope this will help all if still using asus phone.

Related

Proximity Sensor issues

I have been having a issue lately with my proximity sensor. I know that the sensor is supposed to turn off the screen when your ear is near it in a cale, and turn back on when you move the phone away from your ear. But when I make a call without putting the phone to my ear the screen goes off and won't turn back on unless the other person hangs up or I pull the battery. I thought it was because I removed some programs but I flashed a new rom and it didn't fix it.
Here's what I have on my Defy.
2.31 central europe rom
Milestone overclock 1Ghz 60vsel
Z4root
SU
System Recovery
8GB microSD
I heard of trouble with the proximity sensor before. What was triggering it was the phone was set to auto brightness. As soon as it was turned off the problem went away. You didn't say if you have it on auto, but if so, maybe try un-checking it?
I stopped trying to fix it. I think it may have something to do with my invisible shield. Maybe it's not letting enough sunlight in? Idk, but when it does have the issue a finger wipe across were the sensor is fixes it. Strange....
Ichibahn SLC said:
I stopped trying to fix it. I think it may have something to do with my invisible shield. Maybe it's not letting enough sunlight in? Idk, but when it does have the issue a finger wipe across were the sensor is fixes it. Strange....
Click to expand...
Click to collapse
This exactly is the problem. I have motodefy and had the same problem with my phone after i installed the new otterbox case with the screen protector. Searched in vain to calibrate or disable the proximity sensor but in vain. Finally, I peeled of the screen protector from the top and cut it off just under the proximity sensor. This worked and the proximity sensor works like a charm now. It is the screen protector that somehow interferes with the IR.
Another check could be too see if there is a smudge of sunscreen cream on the sensor or not, rubbing against te cheek could easily deposit a layer that can block IR.
MOTODEFY WRITES.

[Q] Proximity Sensor Issue? need advice (slight water damage)

Hey guys...I got an incredible deal on a slight water damaged t989 in otherwise great physical shape, and I really like it. The only issue I'm having with it is when I make a call, the screen goes black (still shows the clock at the top...everything else is black), without ever putting the phone to my face. And after that I can't do anything to get it to come back on.
Is it normal for the screen to still show the clock when the phone is up to your ear? I figured it might be based on how amoled screens work (only producing light locally where it needs it), but wasn't sure.
Also, do you think this is the proximity sensor being faulty? That was my guess...it looks like the part costs $23 and is connected to the front camera. I could also try taking it apart and drying it out better (I already did that with the motherboard and it fixed all the other issues it was having, like the main camera not working)...I'm just a little less inclined to do this since I don't see any guides for disassembling that part of the phone and don't want to accidently damage something.
I guess I'm willing to try opening it up further and airing out the proximity sensor...possibly replacing it...but the important question on my mind is does this phone normally still display the time at the top when you hold it up to your ear?
anybody? It would help me just to know if this phones screen goes completely black when making a call, or if it goes black but still shows the very top with the clock and such when the phones proximity sensor is covered up (ie: held up to the ear)

In call screen keeps coming on?

Hey guys. My brother just got this phone and is having some issues. .. He's coming from Lumia 922.. So it shouldn't be too hard to impress him .. right? Well so far he has gone into airplane mode every call he's taken because the screen won't sleep and his cheek toggles to airplane mode. Is there any setting to help this? I want to give him a chance to like this phone, but if you can't even comfortably make a call without worrying about accidentally bumping the button maybe he needs to trade it ...
Any advice would be appreciated.
Does he have a screen protector on it? Sometimes those mess with the proximity sensor and makes the screen stay on.
Sent from my SCH-I605 using Tapatalk 4
I have a somewhat similar issue. I returned my first phone because I thought the proximity sensor wasn't working. I would be speaking on the phone, press my face to the screen and then would hear an ear shattering beep and then then phone would switch to speaker phone. This happened several times. I did have a screen protector on the phone but removed it. It continued even after I removed the protector.
I swapped the phone for a new one and all was fine for the first several days. Yesterday the problem started again. And, no, no screen protector this time.
I've noticed this with this phone, as well. I have a screen protector, but it doesn't cover the proximity sensor. That's in the metal above the screen, I doubt anyone's screen protector would affect it.
Sometimes when my face is literally pressed against the phone, and by proxy the proximity sensor, the screen still comes on and I can see it out of the corner of my eye. While it happened occasionally with my other phones, this has happened more in the week and a half I've had this phone than a couple months with the others. I think it might be a defect in the model if others are having this issue.
I've also had it turn on the speakerphone for no reason even when it's pressed against my face. Don't know if that's part of the issue or not.
IceDragon59 said:
I've noticed this with this phone, as well. I have a screen protector, but it doesn't cover the proximity sensor. That's in the metal above the screen, I doubt anyone's screen protector would affect it.
Sometimes when my face is literally pressed against the phone, and by proxy the proximity sensor, the screen still comes on and I can see it out of the corner of my eye. While it happened occasionally with my other phones, this has happened more in the week and a half I've had this phone than a couple months with the others. I think it might be a defect in the model if others are having this issue.
I've also had it turn on the speakerphone for no reason even when it's pressed against my face. Don't know if that's part of the issue or not.
Click to expand...
Click to collapse
Well it's nice to hear that I am not the only one having this issue, but frustrating that I am too. . If anyone finds settings or a solution let me know. . It's definitely annoying.
Must be a limited issue. Haven't heard of this from anyone I know and I have yet to have the issue.
I think I may have figured out my problem. I had an "el cheapo" TPU case (http://www.ebay.com/itm/Transparent...r-for-HTC-One-2013-M7-Accessory-/330949139388) on the phone. Today I put 3 different callers on speakerphone & mute simultaneously. Took the case off and haven't had a problem since.

[Q] Issue with Proximity Sensor?

Hi Guys,
Newbie here, wonderful forum and lots of tech stuff, kudos to every one who have contributed.:good:
Facing couple of issues with my NOKIA X, request your help pls!
Issue: Screen goes blank during a call, when using the phone without headset, & doesnt come back on, untill the call is disconnected by the caller at the other end.During this period, when the screen goes blank, it leaves me with no access to the menu, dialpad, etc and the call disconnect button doesnt end the call as well.
1) Turned off proxmity sensor in the "Phone-Settings" menu, it works properly.ie the screen stays "on" during the call and no issues with disconnecting the call, accessing the other dialpad options etc.
2)Also Turned on/off Automatically adjust screen brightness , observed that issue is intermittent.
Any leads would be helpful.Not sure about sensor calibration and tweaks
thanks
K
the screen supposedly to turn off during calls when it detect something near the proximity sensor ie your face when attending calls, this is to preserve power, and it should've come back on again when u bring it far from your face. this is default bahaviour on all smartphones nowadays.
but when it doesn't come back on again after u bring it far from your face after making calls, then thats a problem.
u use screen protector? a thick one and it covering the proximity sensor perhaps? from my experience thick screen protector that covering the sensor can interfere with its sensitivity.
the sensor is on the right side of the nokia logo infront of the phone. look closely and u could see it.
mdfzhi said:
the screen supposedly to turn off during calls when it detect something near the proximity sensor ie your face when attending calls, this is to preserve power, and it should've come back on again when u bring it far from your face. this is default bahaviour on all smartphones nowadays.
but when it doesn't come back on again after u bring it far from your face after making calls, then thats a problem.
u use screen protector? a thick one and it covering the proximity sensor perhaps? from my experience thick screen protector that covering the sensor can interfere with its sensitivity.
the sensor is on the right side of the nokia logo infront of the phone. look closely and u could see it.
Click to expand...
Click to collapse
Thanks for your reply!.
Yes recently i got a matt finish screen protector on.,let me try taking it off and then observe if the issue pops up..Yes its a little frsutrating when the screen doesnt come back on once its moved away from the face & will have to wait till the caller disconnects the line from their end
mdfzhi said:
the screen supposedly to turn off during calls when it detect something near the proximity sensor ie your face when attending calls, this is to preserve power, and it should've come back on again when u bring it far from your face. this is default bahaviour on all smartphones nowadays.
but when it doesn't come back on again after u bring it far from your face after making calls, then thats a problem.
u use screen protector? a thick one and it covering the proximity sensor perhaps? from my experience thick screen protector that covering the sensor can interfere with its sensitivity.
the sensor is on the right side of the nokia logo infront of the phone. look closely and u could see it.
Click to expand...
Click to collapse
Thank you mdfzhi, i took off the screen guard (yeah it looked unusually thick :silly and it seems to work at the moment, will monitor and see if the issue pops up!:good:
thanks again!!
search for screen protector that doesn't cover the proximity sensor, or if u cant find one that doesn't, cut yourself a hole in place of the sensor.
i'm using a thick anti fingerprint screen protector myself but its not covering the proximity sensor.
mdfzhi said:
search for screen protector that doesn't cover the proximity sensor, or if u cant find one that doesn't, cut yourself a hole in place of the sensor.
i'm using a thick anti fingerprint screen protector myself but its not covering the proximity sensor.
Click to expand...
Click to collapse
Similar issue here! Screen goes off while phone is touched to ear however, after taking phone away screen dosent come up! I need to swipe the proximity sensor each time i want to get the display ON back again!!
Someone please CONFORM THIS BUG!
Especially someone running stock! ( I had issues with all stock versions)
 @SilverDragon24! Brother do u face this issue?
mdfzhi said:
search for screen protector that doesn't cover the proximity sensor, or if u cant find one that doesn't, cut yourself a hole in place of the sensor.
i'm using a thick anti fingerprint screen protector myself but its not covering the proximity sensor.
Click to expand...
Click to collapse
Yes i did the same, cut off the top section so that it doesnt cover the sensor, working ok now!
nokia xl blank screen call
Hi guys, my XL got blank screen every I make a call, what happen...
Blank screen show in every rom I've installed, but not on stockrom, at stockrom blank screen call only happen once after that going normal...
I'm not using screen protector at all...
What's wrong, how to fix that ??
this problem is in NOKIA X stock rom..
other roms doesnt have this problem..
its a bug in stock.

Proximity Sensor Issues

My 5x is 2 1/2 years old no BLOD. I'm now having Proximity Sensor issues. When I'm on a call and need to key in numbers the screen flashes off and on. This means I can't use the key pad very odd. Any ideas or help. Hate to need a new phone over this issue but maybe. thanks
If you've had the phone apart recently, you may want to check to see that the little rubber piece (see pic below) didn't fall off.

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