Hi everyone, So I've had 2 iPhones 3Gs. The second phone was a 1-on-1 exchange when the first one's silent button came off). The problem is that the accelerometer on both phones seem to think that 20 degrees tilted to the right is actually upright: You would think that the accelerometer would define upright as the picture on the left. Both of my iPhones and my friend's iPod Touch 2G regard the picture on the right as being upright. The exact tilt degree varies a little (+/- 5°) between the 3 devices I've mentioned. I'm guessing it has something to do with your geographical location: I'm in Singapore. Anyone else in the area or neighboring countries experiencing the same problem? Most games do not have a calibration menu so its rather irritating to play accelerometer games. I've tested with multiple games and they all give me the same problem: Scoops, Kyper, Sky Burger, Real racing, Snail Mail, Doodle Jump, etc.
Everyone's accelerometer is always off by a couple of degrees. But in your case it's worse. I suggest yougo to your local Apple Store or call Apple Support (I'm guessing you have the warranty still) and they might fix it or send you a new one.
Im just wondering why its always some number of degrees to the right. My first iPhone was about 15 degrees off. My current iPhone is close to 30 degrees off (I just re-measured) If I remember my high school physics correctly, when the error is always on one side of the scale, its a systematic error, not a random one lol
Wow this is strange I've never heard of anyone having this problem but yea you should take it to Apple. Ah, my physics teacher was crazy about error...I remember the day I used the iHandy level thing to measure the angle of an inclined plane and he was amazed. bought an iPT for himself next day
Just so you know, you aren't hopeless to get one working at your geographical location. The way it works should be completely unrelated to where you live on planet earth (uses silicon weights/springs and uses an electric current to calibrate it's positioning through variations in the spring). Being silicon and not a metal your location shouldn't change the reading your iPhone spews out. I'd bring it in to Apple and get a new one if that falls under warranty. Otherwise, I'm not sure of any way to re-calibrate an accelerometer on an iDevice (although I will do some research!). Best of luck!
Hey thanks Stairs, I'm not too familiar with the engineering so I ignorantly assumed it works with the earth's magnetic field or something Anyway, don't sweat it. I think i'll just bring it to Apple Thanks again.
