How well-calibrated are the accelerometers in your GNs? Mine seems to be slightly off. Laying the phone down on a level surface, this is the reading I get from GPS Status (which also displays accelerometer data):
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The interesting parts are the "Pitch/Roll" numbers and the yellow "blob" at the center of the compass. The pitch being a bit off (N01 = 1 degree tilt down/forward) can probably be explained by the "hump" on the back of the phone, but the roll being off (V02 = 2 degrees tilt to the left) is a bit more troubling. I have to noticeably tilt the phone to the right to get a 0 degree reading. Ok, so this isn't really a problem in everyday use, since it's a pretty small deviation, but it's a bit annoying to the perfectionist in me. So I would like to know whether this is "normal" or if one should expect a perfectly calibrated accelerometer.
EDIT: Actually, when I turn the phone vertical the left tilt error seems to pretty much double. Also, even though the phone shows close to 0 degrees up/down tilt when level, it doesn't show anything near 90 degrees when held vertical. It's more like 85 degrees, and I have to go way past "zenith" (so the phone's screen is angled slightly toward the floor) for it to show 90 degrees. This means that in apps such as Sky View I have to tilt the phone up a bit to get the horizon vertically centered on the screen.
Are these accelerometers just that inaccurate, or is it just mine?
Anyone? I would really appreciate some answers!
are there not apps that you can use to "recalibrate" and correct this? With all measurements systems there will be inherent errors due to the hardware, which is why the recalibration comes in, and there are simply too many variables, eg how flat is your flat surface? Is the casing on the phone flat?
Sent from my Galaxy Nexus using Tapatalk
leonironchef said:
are there not apps that you can use to "recalibrate" and correct this? With all measurements systems there will be inherent errors due to the hardware, which is why the recalibration comes in, and there are simply too many variables, eg how flat is your flat surface? Is the casing on the phone flat?
Sent from my Galaxy Nexus using Tapatalk
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Click to collapse
No, there's no way to globally calibrate the accelerometer. You can do it locally in certain apps, but the problem will remain in every other app.
And about the "variables": Of course such things will affect things a bit, but they can't account for all the issues I'm seeing. Not even close.
Nobody has two minutes to try this out and check what results they get...?
RoadHazard said:
No, there's no way to globally calibrate the accelerometer. You can do it locally in certain apps, but the problem will remain in every other app.
And about the "variables": Of course such things will affect things a bit, but they can't account for all the issues I'm seeing. Not even close.
Click to expand...
Click to collapse
This is another feature of my SGSII that I LOVE and miss on my GNEX (thank GOD I still have my SGSII).
On the SGSII under Settings there is the ability to calibrate your Accelerometer and the Gyro as well. Why they did not incorporate that into the GNEX I dont know. Maybe there is a Dev that can port the settings over?
yiannisthegreek said:
This is another feature of my SGSII that I LOVE and miss on my GNEX (thank GOD I still have my SGSII).
On the SGSII under Settings there is the ability to calibrate your Accelerometer and the Gyro as well. Why they did not incorporate that into the GNEX I dont know. Maybe there is a Dev that can port the settings over?
Click to expand...
Click to collapse
Yeah, it seems like such an obvious thing to include on the OS level, since these accelerometers clearly aren't always perfect out of the box (I've read about several people who have similar issues with their GNexuses).
How is the one in your phone? Do you experience any of the problems I'm describing?
Related
I haven't seen this mentioned anywhere else. Does your ET show (mostly) vertical streaking/unevenness when displaying a solid, light color? Is this something related to AMOLED, or is my ET defective?
Edit: I just realized this is dependent on screen brightness...the streaks are only apparent at the lowest brightnesses.
Thanks.
Screenshots would help others see what you're referring to.
Sent on the run.
I get this when my screen goes off and on
Sent from my SPH-D710 using XDA App
I have to mention that the first one i had, was like this, but it showed like a dark spot in the center of the screen, btw screenshots wouldn't show this problem because is actually the hardware" Screen" In this case.
So i went ahead and brought it to the Sprint Store where i bought it from, and asked for a replacement due to the Screen hardware defect, they kept *****ing at me telling me, that they have to keep it for a whole day, to do "Tests" Im like... well its a hardware issue and i have taken the phone and hardreset it, making the phone as if just out of the box, and showed them the problem again"btw the phone comes with a Gray and Green pure colored background images that you can show to them, that it isn't an Image that you had Altered" , and they can see that it is the screen, and its what i showed to them, and thats when i got my replacement, When i got this one, i saw it again, and it had a white spot... also had various streaks coming from the Top of the screen, went int he second day and got me another replacement, but before i left the store, i stayed about 30 minutes in there, testing the phone out, and downloading all the apps that i had in the phone before. Also Good way to notice this problems( defects ) is dimming the screen all the way, and changing the background to gray, which is a default wallpaper.
This screen didn't have any of the defects that previous ones had, so im a happy camper .
So now what i'd recomend if you can, is replacing/exchanging the phone until you get one with a decent screen.
I get this too when my brightness is turned down. It's most visible on grays. Like the background of the market. It only appears when the brightness is turned down low. There is also this app in the market called "screen test" which cycles through different solid and colored backgrounds. that if you did take it in you could show them that. This issue doesnt really bother me but I have TEP plus there is a one year manufactures warranty so if it gets worse I'm not worried about it.
I finally got around to taking a quick set of comparison pictures. Sorry for the poor quality, I took them quickly with my phone. I also tried to purposely take them out of focus, so moire patterns from the actual pixel grid wouldn't confuse things. I have a feeling this is how all *LED based displays are.
I use the app "Colors" to quickly get a solid patch of color. I encourage a few people to download it, and browse through a few colors (grayish or dark tones - light or bright colors aren't affected as much) and see if they have it. "Grr-ey", "Mighty Slate", "Kind Giant" are good ones to test with.
Things are much more noticeable when the brightness is set low.
Brightness manually set to minimum:
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Brightness manually set to maximum (streaks almost entirely gone):
ranchosteve said:
I get this when my screen goes off and on
Sent from my SPH-D710 using XDA App
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same, i get white vertical streaks at times when i turn the phone on / off..
i exchanged the phone for another one, same issue, less frequent tho
ffolkes said:
I have a feeling this is how all *LED based displays are.
Click to expand...
Click to collapse
You may be right my screen has the same effect :-(
Sent from my Galaxy SII using XDA App.
Hello. Thought I'd add my thoughts into the mix, kind of a mini-review but not very well written and missing lots of things.
The hardware is awesome. The screen really is amazing, and in particular I like the way that it displays blacks so well. Because of this you usually can't see the edges of the screen and it looks fantastic, and coupled with the lack of hardware buttons the front of the phone is really sexy. The back on the other hand isn't as impressive, but it's ok. The "hyperskin" is more hyperbole, and doesn't really help you grip the phone much. Overall it's quite slippy really and I do feel I'll probably end up dropping it sooner or later.
The processor seems to handle everything fine and keep everything running smoothly. GPU I haven't really tested with any 3d games so can't comment on that. Battery life I've found much better than I expected, although I haven't done extensive testing on this. Here are the current battery stats, 18 1/2 hours with about 13% left:
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I haven't really tried out the camera yet so can't comment on that. Call quality is good. Oh and size, I find it a bit awkward sometimes to pull the notification bar down or to hit the back button in the top left of the screen, ie. in the market app but overall I find the size to be good (I have quite small hands). The light weight and thinness kind of make up for the large size.
In terms of software it's as you'd probably expect - awesome. Face unlock doesn't work well in low-light which is kind of annoying. I'm not sure if I'll keep using it but I like it as on my old phone I only used swipe-to-unlock, so it's a bit more secure with this. I'm not exactly worried about someone taking a picture of me and then robbing me anyway.
The hardware acceleration makes a huge difference. The UI is nice and fluid and it's just really enjoyable to use. There is also an option to force hardware acceleration for apps as well which makes a big difference too. For example Twitter was a bit jerky and laggy before enabling it, yet with it on it's perfectly smooth and fluid. The News and Weather widget however doesn't seem to be accelerated; it's really jerky and slow.
Auto-brightness is something that needs tweaking I think. It's often too low (to save battery no doubt), and needs to be raised a little. On top of that sometimes it doesn't even seem to work properly. Earlier on I was looking at it and thinking how it's too dark and then it suddenly jumped up to a decent level of brightness, even with no change in the ambient lighting. I've seen this a few times so I think maybe it's a bug which needs to be ironed out.
The people app is really brilliant, and the G+ integration is really great (if only more of my friends used it..). The swiping thing they've got going on now in various apps is really good and hopefully we'll see more of it in the future. The dialler app is nice, but I am disappointed that you still can't start typing the letters of your friend's name to bring them up like you can on HTC phones.
That's everything I can think of for now, but overall I love the Galaxy Nexus
Ok here's a warning to all of you, the edges of the screen are very sensitive to pressure I noticed the other day light pressure on the edge of the bezel would make my screen discolored, I just took my phone out of my pocket now and I have a yellow vertical band down the right hand side of my screen, I'm guessing my phone squeezed in my pocket when I got in the car for work this morning, just a warning to everyone be ultra gentle with your screens. :-( not happy.
having tested and unboxed over 15 HOXes
i can confirm to you some of them ripple under light pressure, some under some effort and few impossible to ripple
the ripple is a sign of imperfect screen lamination, if your's was very sensitive to begin with than it was defected out of box and hence the damage you have now
out of the 15 i tried, only one of them that my cousin own is completely ripple free no matter how hard you push
the one im talking about feels completely different to the rest, its extremely rigid on both left and right sides with such a tight gap that no dust can get it, like i said it has been an impossible task for me to find another one like it, this one is also perfectly clean and even on whites when viewed at every angle, ie: its lamination is flawless, early HT23 white
something is seriously messed with HTC screen fitting and its only time before more and more cases like this will appear
This phone gets better by the day...
Might dump it on ebay and .....
This is rediculous.... somone with money and power DO SOMETHING!!!!
Mod edit: Edited for language
The glass is pretty fragile anyway TBH. Mine has been in a pocket on it's own and still managed to become scratched after a week, whereas my last iPhone 4 went about two years without getting a mark on either side!
HaTeC said:
This phone gets better by the day...
Might dump it on ebay and **** it all to hell.
This is rediculous.... somone with money and power DO SOMETHING!!!!
Click to expand...
Click to collapse
You should get a Samsung device, I here each of their displays are identically perfect. Seriously, I've never seen a mobile device forum where there weren't a percentage of complaints about the display. You can't build millions and have every unit perfect. Google "iPad/iPhone display issues" and you'll see no one's immune.
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http://www.engadget.com/2011/11/08/t-mobile-galaxy-s-ii-screen-issues-have-some-seeing-poorly-rend/
BarryH_GEG said:
You should get a Samsung device, I here each of their displays are identically perfect. Seriously, I've never seen a mobile device forum where there weren't a percentage of complaints about the display. You can't build millions and have every unit perfect. Google "iPad/iPhone display issues" and you'll see no one's immune.
http://www.engadget.com/2011/11/08/t-mobile-galaxy-s-ii-screen-issues-have-some-seeing-poorly-rend/
Click to expand...
Click to collapse
Thats the good thing about being able to manufacture your own screens and not have to rely on 3rd parties I suppose. Imagine being able to buy a HTC phone with a Samsung screen in it! Minus all the Hardware issues too!
Oh wait, were you being sarcastic!?!? lol
Hello guys. I'm currently trying to fix a friends HOX that fell and now the screen doesn't always display image although we can see it always lighting up (it turns on but stays black) .
If I press hardly the HOX's area in red while turning it ON, it works fine. I'm assuming this could be some broken welding points but would like your opinion.
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I'm thinking of heating the area with a heat gun, but I'm afraid I'll kill the rest of the phone... what do you think?
Also, after disassembling the phone, the vibration stopped working and I've checked every flat cable and every connector I could find...no ideas to fix this one since it was working before I cracked the phone open.
Any comments are greatly appreciated.
Tks
Hi
casca said:
Hello guys. I'm currently trying to fix a friends HOX that fell and now the screen doesn't always display image although we can see it always lighting up (it turns on but stays black) .
If I press hardly the HOX's area in red while turning it ON, it works fine. I'm assuming this could be some broken welding points but would like your opinion.
I'm thinking of heating the area with a heat gun, but I'm afraid I'll kill the rest of the phone... what do you think?
Also, after disassembling the phone, the vibration stopped working and I've checked every flat cable and every connector I could find...no ideas to fix this one since it was working before I cracked the phone open.
Any comments are greatly appreciated.
Tks
Click to expand...
Click to collapse
Possibly a chip has become partly detached from the solder ball grid array due to the shock of the fall. You will not be able to repair this by heating, even if you could reach the melting point of the solder.
The manufacturer would repair by replacing the circuit board and the existing one would be considered unserviceable.
Regards
Phil
So in resume, my friend has a HOX for spare parts... damn...
Couldn't you pack the inside of the housing at the point where you need to apply pressure? Using a piece of card or something. Hardly ideal but would make it functional again
That has been my first attempt, and it's better but still, not enough.
I'm going to disassemble it for the tenth time in a final effort...
tks for the tip though!
So, I've just realized the back metal plate comes out nicely and I think I've found the problem for the GPU issue... that small component on the red area has a broken piece lol (WTF!)
I have applied pressure directly on top of it and I think it will be usable like this, but it now needs a bit of daily use to check if I'm right or wrong.
Can anyone identify what component type is that?
Also, unfortunately (and I don't have a clue how this has happened), the vibration stopped working after opening the phone on the first time, any one has any ideas of what to look for? I don't see any flex cable cut or any other damaged parts...
Tks guys.
Problem solved, some back pressure on the broken piece and the hox is good to go.
The only thing still not working is the vibration...
Sent from my HTC One X using xda app-developers app
I just got this thing yesterday from eBay, refurbished from Asus for $209 (32gb) and one of the first things I noticed was a small protrusion from above the microphone jack. Here's my dilemma, I'm really into my electronics looking perfect although I know over time they will have little problems. But is this something to worry about or me just being anal?
I have the opportunity to get it exchanged but it would take a several days and besides being anal I'm not patient.
Thanks in advance.
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Well, it's definitely not something that's supposed to be there - I just checked my tablet and it doesn't have that slight lump. The only thing it might possible interfere with would be headphones, and even then there's a really slim chance. Pop in some headphones and see if they work - if they do, there should be no other problems.
AidenM said:
Well, it's definitely not something that's supposed to be there - I just checked my tablet and it doesn't have that slight lump. The only thing it might possible interfere with would be headphones, and even then there's a really slim chance. Pop in some headphones and see if they work - if they do, there should be no other problems.
Click to expand...
Click to collapse
I just tested out the headphone jack and it works just fine. So basically it's just an aesthetic issue at this point.
Is it worth going through an exchange for though? Part of me feels as if it has this problem there is a chance it might have others.
yugendreams said:
I just tested out the headphone jack and it works just fine. So basically it's just an aesthetic issue at this point.
Is it worth going through an exchange for though? Part of me feels as if it has this problem there is a chance it might have others.
Click to expand...
Click to collapse
For another device I would tell you to get a new one.
But for this tablet...
If you can't find any other issue (dead pixels, random reboot, touchscreen issues grounded or not, etc) you should keep it. The next one could be OK aesthetically but have other problems.
Sent from my Nexus 7 using XDA Premium 4 mobile app
Matrix_19 said:
For another device I would tell you to get a new one.
But for this tablet...
If you can't find any other issue (dead pixels, random reboot, touchscreen issues grounded or not, etc) you should keep it. The next one could be OK aesthetically but have other problems.
Sent from my Nexus 7 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Thanks man, that's a really good way to look at it. I just need to give it a nickname like "bumpy" and get over my aesthetic analness.
Is there a good way to test if he multi-touch is buggy?
yugendreams said:
Is there a good way to test if he multi-touch is buggy?
Click to expand...
Click to collapse
"Yet Another MultiTouch Test" from the play store is a good way to test multi-touch.
If the tablet is in a perfect electrical shape, I would simply keep it. Check the display for dead or stuck pixels, dirt or light bleeding ( though I don´t have anything against it ) and multitouch issues. If the device is usable, I would rather keep it and don´t bother about this dent. The guy who has opened the device before seems to have two left hands though...
its evident that it may have been opened (not sure for what). but as mentioned above, if all works great, no issues at all, just use and enjoy it. other units have issues, and risky to get those to replace a perfectly good one (aside from that bump).