Develop Bugs

[SOLVED][Q] Use of Grip Sensor

I was running the *#0*# Test and I found something called a grip sensor.
I have no idea what its used for, any idea?
Sm T211

Magnetic flip cover detector.

ketut.kumajaya said:
Magnetic flip cover detector.
Click to expand...
Click to collapse
Thanks, sadly i don't use a cover

On Tab 3 8.0, I found flip cover using a different sensor, a magnetic switch. So, grip sensor still not utilized yet (in CM, not sure about stock ROM). It triggers some events when you touch your Tab 3 on the top left side. Any idea how we could uses this sensor? Touch to wake?

[Q]Location of magnetic sensor on tablet covers

Can anyone with a smart cover (the ones with magnet) confirm the location of the embedded magnet on the cover?
I believe book or simple covers, all allow the magnetic lock/unlock of screens.
Need it to emulate the lock/unlock feature using an old non-magnetic cover and some spare magnets I have.
Device : Samsung Galaxy Tab S Wifi 8.4"

I took a small piece of magnetic tape, which has a low magnetic field, and located a spot on the rear, along the right side, near the bottom. Touching the back about 1/2 inch in from the right side and about 1/2 inch from the bottom on the back with the tablet facing you is where it would turn off/on.
If the screen is already off, the magnet will turn it on and it will stay on when the magnet is removed.
If the screen is on, the magnet will turn it off, but when removed it will turn back on.
Youtube video link
http://youtu.be/Lm8hMPvQpFI?list=UUwpY15xoSLkfrImNr-bOYgw
Photo attached

I found the exact spot! (the red spot at the bottom in the pic)
Works both from front and backside.

subheet said:
I found the exact spot! (the red spot at the bottom in the pic)
Works both from front and backside.
Click to expand...
Click to collapse
Yeah...but if it's a real weak magnet, hardly any pull, it won't work from the front. Which makes me think the switch is closer to the back. Dunno what the OP is doing but it might make a difference in how strong a magnet he uses.
But it's close to where we both have indicated.

Hello, anyone knows the location of the magnetic sensor in TAB A 2016 SM-T580 please??

screen turns off after I turn it on

I'm having a problem where in low-light areas, my screen turns off a second after I turn it on. The only way I can get it to stay on is by plugging the phone in or unplugging it if it's already plugged in. It seems like there's an issue with the light sensor / proximity sensor that helps keep the device off when it's in your pocket. I'd like to fix, disable, or remove this feature. Anyone else having this issue or know how to fix it? I've encountered it before with the lightflow app where the solution was to remove lightflow, but this is built in which makes it more difficult. Fyi My phone is rooted.

No suggestions for a fix, sorry. I saw behavior like this (screen turning off) when I put mine in an arm band case with clear plastic covering the whole front of the phone. I assume the proximity sensor thought the phone was in a pocket, etc.
The only thing I can think of to simply learn more about the problem is to install CPU-Z and look in the Sensors section to see what the LGE Proximity sensor is reading.
A screen protector that covers the sensors can also cause this.

I get this in low light, too. I have to point it at a light source to get it to turn on. Very aggravating. The longer I use my G4, the more flaws I find.

Do you guys have a tempered glass screen protector on? I have this too, and confirmed this is what it's from. When I had one that didn't directly cover the sensor I had zero issue. It may also be that the sensor isn't that great or polls on too slow of an interval.
Sent from my VS986 using Tapatalk

Interesting. Does this happen in no-light situations as well? Or is there is a "dead zone" between normal light, and pitch dark?
I tried mine in an almost-fully-dark scenario, in a closet with the door almost fully closed. It turned on normally using both the power button, and double-tapping the screen. Mine is a Verizon model, 610B software.

Thanks @RedOCtobyr for pointing out it could be the screen protector
Juiced718 said:
Do you guys have a tempered glass screen protector on? I have this too, and confirmed this is what it's from. When I had one that didn't directly cover the sensor I had zero issue. It may also be that the sensor isn't that great or polls on too slow of an interval.
Sent from my VS986 using Tapatalk
Click to expand...
Click to collapse
Yes! I have the tempered glass screen protector. I'm going to remove it now. Besides this whole light sensor issue, I absolutely hate this thing. Compared to a plastic screen protector, I can barely move/drag my finger across the screen because it grips my finger so much. I also feel like it messes up the touch sensitivity so that a lot of lighter touches don't register. Whether that's true or not, the excessive grip this thing has on my fingers and this whole sensor issue is reason enough to tear this piece of crap off.
...
Yep. Light sensor now works in low-light situations but detects when it's being blocked in close proximity. It feels a lot better to touch the screen now as well. Anybody know of a good plastic screen protector to order off Amazon?

shbang said:
Thanks @RedOCtobyr for pointing out it could be the screen protector
Yes! I have the tempered glass screen protector. I'm going to remove it now. Besides this whole light sensor issue, I absolutely hate this thing. Compared to a plastic screen protector, I can barely move/drag my finger across the screen because it grips my finger so much. I also feel like it messes up the touch sensitivity so that a lot of lighter touches don't register. Whether that's true or not, the excessive grip this thing has on my fingers and this whole sensor issue is reason enough to tear this piece of crap off.
...
Yep. Light sensor now works in low-light situations but detects when it's being blocked in close proximity. It feels a lot better to touch the screen now as well. Anybody know of a good plastic screen protector to order off Amazon?
Click to expand...
Click to collapse
I love my tempered glass. Just not ones that cover that silly sensor. I can't say for sure but I feel my G3 glass also covered it without this issue, or at least from what I remember.
Sent from my VS986 using Tapatalk

RedOCtobyr said:
No suggestions for a fix, sorry. I saw behavior like this (screen turning off) when I put mine in an arm band case with clear plastic covering the whole front of the phone. I assume the proximity sensor thought the phone was in a pocket, etc.
The only thing I can think of to simply learn more about the problem is to install CPU-Z and look in the Sensors section to see what the LGE Proximity sensor is reading.
A screen protector that covers the sensors can also cause this.
Click to expand...
Click to collapse
how did you over come that issue with the armband. i am having the same problem right now thanks.

Follow steps below to re-calibrate proximity sensor(must with the glass protector is installed and which is sensor covered up)
1. TYPE "277634#*#" in phone dialer. Hidden Menu screen will show up.*
2. Select "Device Test"->"MT", it will show "system will be restarted", then choose OK.*
3. After reboot, GENESIS MiniOS 3.1 screen will show up, press "individual item+power" while power button is pressed.*
4. Next, find "sensor test", enter it(do not block the proximity sensor), the proximity sensor will be automatically calibrated. Then block proximity sensor two times to exit.*
5. Find "Back to the MainList", enter.*
6. Press "Normal boot+power" while power butten is pressed to reboot system, done.
Now the problem should be solved.

Sammae7 said:
I get this in low light, too. I have to point it at a light source to get it to turn on. Very aggravating. The longer I use my G4, the more flaws I find.
Click to expand...
Click to collapse
I have the exact same issue! So annoying omg

Completed this - will test if it worked
sampathkumar2811 said:
Follow steps below to re-calibrate proximity sensor(must with the glass protector is installed and which is sensor covered up)
1. TYPE "277634#*#" in phone dialer. Hidden Menu screen will show up.*
2. Select "Device Test"->"MT", it will show "system will be restarted", then choose OK.*
3. After reboot, GENESIS MiniOS 3.1 screen will show up, press "individual item+power" while power button is pressed.*
4. Next, find "sensor test", enter it(do not block the proximity sensor), the proximity sensor will be automatically calibrated. Then block proximity sensor two times to exit.*
5. Find "Back to the MainList", enter.*
6. Press "Normal boot+power" while power butten is pressed to reboot system, done.
Now the problem should be solved.
Click to expand...
Click to collapse
Thank you for this. Although on Marshmallow the Hidden menu code has changed. I found this on reddit which helped.
User: Tramagust (I can't link because I have not made enough posts yet )
"It is *#546368#*MODELNUMBER#
So for the international version it is *#546368#*815#
For the Dual sim version it is *#546368#*818#
I assume for the NA version it is *#546368#*811#"
I will see if it makes a difference. Cheers

dupz88 said:
Thank you for this. Although on Marshmallow the Hidden menu code has changed. I found this on reddit which helped.
User: Tramagust (I can't link because I have not made enough posts yet )
"It is *#546368#*MODELNUMBER#
So for the international version it is *#546368#*815#
For the Dual sim version it is *#546368#*818#
I assume for the NA version it is *#546368#*811#"
I will see if it makes a difference. Cheers
Click to expand...
Click to collapse
Yes that code is for lollipop.it is different as you said for marshamallow.

Re-calibrating the proximity sensor.

Hey guys,
The proximity sensor on my G4, for some reason, causes my phone to turn the screen back off immediately when I try to turn it on in the dark. I took it to Verizon, and apparently they see this very frequently. so they would not just give me a new phone. I do have a tempered glass screen protector on my phone, and it covers the whole front, covering the proximity sensor. Is there anything I can do it solve this, it is super annoying? I basically just have to turn off pocket mode, but I cannot see any settings for that on the G4.
I saw another XDA thread that referenced the At&T model of this phone, they have a number to dial that gets to a service menu, that did not work on my Verizon G4.
thanks, any help is appreciated.

The glass screen protectors should have been better designed. The proximity sensor uses infrared (IR). IR radiation doesn't go through glass. So probably no way to fix it other than getting a glass cutter and removing that section of glass.

This one has cutouts for the speaker, sensor and camera...
http://www.amazon.com/Ballistics-An...rint-Explosion-proof-Protection/dp/B00Z6PSATM
Appears the updated version of the Yootech does too... These seems to actually have glass instead of just a entire piece missing above the speaker and sensor.
http://www.amazon.com/gp/product/B0..._m=ATVPDKIKX0DER&pf_rd_r=0ZS7GS642JZ5C9GQBRMZ

Well then what it seems like you have here is a proximity sensor that needs calibrating. [emoji6]

aka848 said:
Hey guys,
The proximity sensor on my G4, for some reason, causes my phone to turn the screen back off immediately when I try to turn it on in the dark. I took it to Verizon, and apparently they see this very frequently. so they would not just give me a new phone. I do have a tempered glass screen protector on my phone, and it covers the whole front, covering the proximity sensor. Is there anything I can do it solve this, it is super annoying? I basically just have to turn off pocket mode, but I cannot see any settings for that on the G4.
I saw another XDA thread that referenced the At&T model of this phone, they have a number to dial that gets to a service menu, that did not work on my Verizon G4.
thanks, any help is appreciated.
Click to expand...
Click to collapse
Hello to re-calibrate the proximity sensor you must be root and download shorcut master(lite) from playstore open and search for hidden menu and then go to de bottom and click LaunchMiniOS and continue with the original post: http://forum.xda-developers.com/showpost.php?p=63133124&postcount=3

Galaxy note 10 + - Trigger screen lock/AOD when "wallet" case is closed?

Hello, is there any way to trigger the screen to turn off (go to AOD etc) when something is closed on its face? I know in the past magnets and other things were used, and even for the SView covers. Is this possible for a DIY?

In the past, doing what you want was fairly easy, there are some apps that do it, I used gravity screen app, even with macrodroid or automate it, but, since the proximity sensors are behind the screen, the whole functionality changed, now, only the phone calling apps can access the proximity sensor, I now rely on the gyro sensor to turn the screen off, it is not the same, but a somewhat useful workaround solution

A small magnet in left-bottom corner does the trick, but only when my original clear-view cover is installed. Without the installed cover (which the phone recognises as installed accessory, I assume through NFC label in cover) the screen will stay on when a magnet is used in the right spot.
I think DIY solution with magnet is difficult, how to trick phone to think accessory is installed and activate magnetic sensor.
The magnetic sensor in phone is located approx 2.0 cm from left screen edge, approx 1.5 cm from bottom.