iPhone 4 Multi Touch Issues when Charging In a Car

[1070ebubekir]

how many multitouch points does it have ??

[GrapeFlavouredPop]

Im having the same problem on my brand new iphone 4s

[logitleft]

HEY EVERYBODY LISTEN UP IT'S THE CHARGER. THE PART YOU PLUGIN TO THE WALL I HAD THE SAME PROBLEM BUT WHEN I I REPLACE IT I WORK JUST FINE SO YEA

[bahamutakos]

I have the same problem but with the factory charger ... any idea???

[youcrackmeupdude]

Are you using a true sine wave inverter? In any case, converting 12v DC to 120v AC to 5v DC is inefficient and prone to cause problems with electronics. Your 12v DC to 5v DC voltage regulator is going to provide cleaner power than what you're trying to do in this video. If you must run 120v electronics off your 12v cigarette lighter, buy a high quality 'true sine wave' inverter.

The battery charging circuitry could be acting as weird as your screen, so be careful you don't blow up your bat.

[gonzozil]

i have the EXACT same problem with my iP4 when plugged to an inverter, however, everything is okay if i charge it with a normal USB cigarette lighter charger.

i was thinking that the inverter would be better because i would be using it with the iP4's supplied original charger, but it turns out that using an inverter with the supplied charger actually messes things up. maybe apple's chargers doesn't like inverters.

have you found a solution to this? what brand inverter were you using?

[MattXor84]

Hey dude, just letting you know that I swapped my 8gb iPod touch for a 32gb. Still having the same issues so I contacted AppleCare. They were able to recreate the issue in the store. I'm on my third replacement, which is not good news. Having any issues with music playback in the iPod music app? My music won't stop skipping or stopping.

[HellaBAD]

@MattXor84 Hey, I tried recreating the issue with my older 3G, but didn't experience any problems, so this is definitely a new iPhone/iPod Touch hardware or firmware issue.

As of yet, I haven't had any major music stopping or skipping issues in the iPod app, but I have had my music stop after a song has finished even though my iPod is set to shuffle and there are still plenty of songs it hasn't played, which is a little weird.

I'll give AppleCare a call and see what they tell me.

[MattXor84]

I am having the same problem on an iPod touch 4. I didn't realize that the problem most often occurs during recharging on an unsanctioned USB charger I started using recently. I thought it was a multitasking issue, since it wouldn't register my finger press long enough to offer the close option.

[HellaBAD]

@MattXor84 - Glad to hear our devices aren't the only ones experiencing this issue.

Ultimately, fault probably lies on the adapters/chargers being used, but it would be interesting to see if the issue could be solved with a firmware update.

On that note, I should probably try to reproduce this on my older iPhone 3G to see if it experiences the same effects.

[lessena]

@HellaBAD as an fyi, this is actually resulting from power supply noise being introduce to the phone through the car inverter. The touch screen controller functions by detecting the capacitance of your finger touching the screen.

When you plug into a noisy power supply like a car inverter, the "noise floor" or reference point for detecting your finger is blown completely out of whack and your phone senses touches everywhere.

There are touch controllers in development to fix this ~2012

[inceptionsd]

@MattXor84 OH THNK GOD! I have the same problem after charging. So it will go away after a while?!