Magnetic Sensor - Nexus 7 Q&A, Help & Troubleshooting

Is it safe putting a magnet on a screen. I thought it was not? Should we do this to are tabs :/

Its fine. Old CRT screens used to have issues with magnetic interface but LCD screens don't mind.
Sent from my ADR6400L using Tapatalk 2

Oh. Thx!

Related

Is the screen ripple normal with light presses?

When I'm pressing my fingers on the screen, I can see a clear and quite bad screen ripple... Is this the lifting problem that people are talking about?
Thanks
James
Sent from my LG-P880 using Tapatalk 2
If you mean by pushing on the edge of the screen then yes that is result of the screen lift.
Sent from my Nexus 7 using XDA Premium HD app
Every nexus 7 I have had has the screen lift and all of them have the ripples effect, mostly on the left side
Yeah it's mainly on the corners, with the screen lift am I supposed to be able to physically see the screen lifting round the corners?
Thanks for the fast replies btw
Sent from my LG-P880 using Tapatalk 2

[q] s4 - do not use a screen protector

Hey All,
I was reading the user manual for the S4 (Link), and it said on page 8 "Do not use a screen protector. This causes sensor malfunctions".
If I didn't look online for the manual, I wouldn't have known this information, as I didn't get the manual with my phone. (Only the quick start guides).
What is everyone opinion on this?
victorlht88 said:
I don't think the sensor will be affected if the screen protectors are well cut at the right areas.
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Click to collapse
Which areas?
They probably be cut around sensors at the top.
Sent from my HTC One using xda app-developers app
I'd assume that it's because of the floating touch. Being an owner of the Note 2 (that has floating touch with the S-Pen) I can tell you that a screen protector doesn't affect my experience.
Now if the S4 uses a different way of capturing floating touch (because it doesn't have a stylus), this may be true. I suppose only time and testing will tell.
Sent from my SGH-T889 using xda premium
i'm still going to use screen protectors.
I have screen protector. I got it with the phone when preordered. Its cut around the home button and cut just before sensors at top. All works fine.
Sent from my GT-I9505 using xda app-developers app
JustSueMe said:
I have screen protector. I got it with the phone when preordered. Its cut around the home button and cut just before sensors at top. All works fine.
Sent from my GT-I9505 using xda app-developers app
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Click to collapse
Does the floating touch thing work?
Hey, i too have the screen protector, everything including floating touch working alright
JihadSquad said:
Does the floating touch thing work?
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Click to collapse
....
all working
Get a screen protector and a case if you don't want to scratch your phone, that way you can sell it in an "excellent" condition. I had my GS3 for 8 months and it's still in pristine condition.
I have had a screen protector on since day one with no malfunctions. Also, you will notice that protectors designed for the S4 don't cover the sensors at the top of the phone.
Sent from my GT-I9505 using xda app-developers app
It makes the floating touch slightly less sensitive (and accurate at longer distances), but other than that it's fine.
I have a screen protector on my s4 and have no issues
I also used screen protector from day 1, no problem.
had one no change btw after accident not ahve one now btw think may nto go to bu one what do u think? buy one:?!
ste1164 said:
They probably be cut around sensors at the top.
Sent from my HTC One using xda app-developers app
Click to expand...
Click to collapse
yea u r corect plus i use ones no any effect

[Q] Technology wise ... How does Air view work?

I have found threads and info about how it works on the Note 2, about magnets in the stylus but how does it know when your finger is hovering over the S4 screen?
Anyone know?
I have the same question.
Proximity sensor
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damador said:
Proximity sensor
Sent from my GT-I9505 using Tapatalk 2
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The one at the top of the phone?
So it sort of senses downwards as well as infront of itself?
damador said:
Proximity sensor
Sent from my GT-I9505 using Tapatalk 2
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No.
It's the same old touchscreen controller technology just much more sensitive.
AndreiLux said:
No.
It's the same old touchscreen controller technology just much more sensitive.
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I was reading about it's a new controller. With special features
Enviado desde mi GT-I9505 usando Tapatalk 2
I'm just curious.
What are stock apps that able to utilize this function. I only notice this when I use Flipboard.
Sent from my GT-I9500 using xda app-developers app
rezaluchu said:
I'm just curious.
What are stock apps that able to utilize this function. I only notice this when I use Flipboard.
Sent from my GT-I9500 using xda app-developers app
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I read somewhere that it was indeed the sensor at the top, mixed with the old technology too.
The apps I know it works with are stock email, stock texts and flipboard. Not sure what else. It doesn't even seem to work on lockscreen...
Eambo said:
I read somewhere that it was indeed the sensor at the top, mixed with the old technology too.
The apps I know it works with are stock email, stock texts and flipboard. Not sure what else. It doesn't even seem to work on lockscreen...
Click to expand...
Click to collapse
How to use the air view on Stock text? I thought it can show the contents of text from text overview display. But when I tried, nothing shown.
Sent from my GT-I9500 using xda app-developers app
Sooo no way that this feature will be on the galaxy s3? Since it's hardware related
Sent from my GT-I9300 using xda app-developers app
Samsung is using a super sensitive capacitative touchscreen that can sense your finger even when its a short distance from the screen, essentially. its the same reason that there's an option so that you can use it with gloves on
Sent from my Nexus 7 using Tapatalk 4 Beta
I'm no engineer, but this is my basic understanding gleaned from reading wikipedia and other sources. Capacitive touchscreens work by sensing changes in an electrostatic field. Your finger is an electrical conductor, which distorts the field. In normal phones the field is calibrated to extend just past the surface of the touchscreen. The S4's electrostatic field is simply overcalibrated to sense your finger from a distance, and it's also why it works with gloves on.
delete
nothing to do with the capacitive screen or proximity sensor. if the screen was THAT sensitive it'll be firing off to even the slightest atmospheric disturbance. actual workings are related to the 2 IR sensors flanking the speaker grill which individually log IR intensities emitted by ur finger in front of the screen. an algorithm then compares these values and works out where ur finger is pointing.
AFAIK it works with help of IR Sensor and/with Proximity Sensor
If screen sensitivity does this job then ...Nokia Lumia 920 to 520 all devices all should have this feature cuz all these devices have Super Sensitive screens
Sent from my HTC EVO 3D X515m using xda premium
MiG123 said:
nothing to do with the capacitive screen or proximity sensor. if the screen was THAT sensitive it'll be firing off to even the slightest atmospheric disturbance. actual workings are related to the 2 IR sensors flanking the speaker grill which individually log IR intensities emitted by ur finger in front of the screen. an algorithm then compares these values and works out where ur finger is pointing.
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Click to collapse
The air is much more inert than your finger. The proximity/IR sensors just blast IR beams away from the phone for things like Air Gestures and have nothing to do with Air View. They certainly don't shoot beams across the surface of the screen to detect your finger. The finger hovering simply uses a more sensitive capacitive touchscreen, as Sony explains here:
http://developer.sonymobile.com/knowledge-base/technologies/floating-touch/
rezaluchu said:
How to use the air view on Stock text? I thought it can show the contents of text from text overview display. But when I tried, nothing shown.
Sent from my GT-I9500 using xda app-developers app
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Click to collapse
This happened with me also.
The air view works in stock messaging app , gallery , flipboard and even when you dial a number if you have speed dial feeded.
For this you need to hold air view option in notification bar for about 2 seconds then a set of options will open. There you can switch on air view for messaging, gallery etc etc.
Sent from my Octa Core S4
It will be the electromagnetic field that the screen is detecting from your skin/finger. The same way that on other screens, they don't work with gloves unless you have the special gloves that have conductive fingertips on them.
Nothing to do with the sensors on the top of the phone cos if you cover them up, air view still works! Plus the sensors aim out the top and at 90 degrees to the phone face, how would they sense something almost touching the screen on the bottom?
Sent from my GT-I9505 using Tapatalk 2
Works with the calendar also.
Sent from my SPH-L720 using Tapatalk 2
rezaluchu said:
I'm just curious.
What are stock apps that able to utilize this function. I only notice this when I use Flipboard.
Sent from my GT-I9500 using xda app-developers app
Click to expand...
Click to collapse
Stock Text
Stock Email
Flipboard
Gallery
Stock Video player (shows previews with sound, and on the progress bar)
Stock Music Player (Previews of song name and on progress bar)
Samsung Hub
S Planner
and S Memo
Just ensure you have Information Preview and Progress Preview turned On in Settings.

S4 and Otterbox

Anyone have strange issues with airview and cases?
I normally wouldn't use a screen protector but one came with the Otterbox commuter so I used it.
My airview seems to jump around with the case and screen protector.
Sent from my SAMSUNG-SGH-I337 using Tapatalk 4
xisruno said:
Anyone have strange issues with airview and cases?
I normally wouldn't use a screen protector but one came with the Otterbox commuter so I used it.
My airview seems to jump around with the case and screen protector.
Sent from my SAMSUNG-SGH-I337 using Tapatalk 4
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I have no problems with mine, using the same setup as you.
FourPointedFreak said:
I have no problems with mine, using the same setup as you.
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errr if I take the case off airview works fine......very strange issue
xisruno said:
errr if I take the case off airview works fine......very strange issue
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Click to collapse
Perhaps part of the case is sticking down to the screen protector covering the screen somewhere. Sounds to me like there is a section of the screen being held down and when you attempt to use the feature, it jolts and jumps around not knowing where you want it to move.
I noticed this issue with a couple of cases on my friends. I think it is the cover near the sensors. What they did was remove the screen protector near sensors area and widen up the sensor area if your case covers it.
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Ya I may take the screen protector off. Don't really need it just need the protection from dropping it
Sent from my SAMSUNG-SGH-I337 using Tapatalk 4
I think it may have been the screen protector as I have removed it and works great now.
Sent from my SAMSUNG-SGH-I337 using Tapatalk 4

Bent screen

No I do not own a flex
Anyway when I put it screen down on a flat surface and touch the corners it starts rocking.
How to describe better.
One finger on left upper, one on the right down corner and touching once up once down. (Or the opposite corners, has to be diagonal)
If you have the same issue, your should feel it.
It does not distort the screen, but not sure it won't get worse in the future.
Anyone else encountered this?
Sent from my LG-D802 using Tapatalk
I have this but it's because I manually replaced my screen and did not have something to put in so t wouldn't rock but since I use a case that covers the bezel it's not a problem
Sent from my LG-D800 using xda app-developers app
XxZombiePikachu said:
I have this but it's because I manually replaced my screen and did not have something to put in so t wouldn't rock but since I use a case that covers the bezel it's not a problem
Sent from my LG-D800 using xda app-developers app
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In my case it's the glass that's bent. Not like it's lifted, but deformed. Not sure how it really happened. Maybe the original quick window cover... or just having it in my pants
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PAGOT said:
In my case it's the glass that's bent. Not like it's lifted, but deformed. Not sure how it really happened. Maybe the original quick window cover... or just having it in my pants
Sent from my LG-D802 using Tapatalk
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Maybe heat? or probably sat on it that made one side of the screen cave in? lol
Always have it in the front more like the heat... btw I would not even notice it.. just by accident I tapped one corner and it was not touching the table...
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