Second generation of iPhone. Model A1241 / 8 or 16 GB capacity / black or white plastic back. Repair is more straightforward than the first iPhone. requires screwdrivers, prying, and suction tools.

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iPhone 3G was dropped, now it is unresponsive

Hi there,

I have an iPhone 3g which was recently dropped (at least I think it was, that night was a little hazy) and now it does not respond to anything. The screen is not cracked, and everything appears to be no different than before in terms of blemishes and such.

I've plugged it into multiple computers, using multiple cords (and I know each cord is good because I've tested them on my wife's iPhone 3g) and still there is no response.

While plugged in I've tried holding the power button, nothing. I tried the power button + home button for at least 30 seconds, nothing.

Being that there has been a 1cm crack stemming from the 30 pin dock for a long time, I thought maybe the dock was damaged in the fall, and at the same time my battery went dead so it is unresponsive because the battery is dead and it cannot be charged because the dock was broken. So I ordered a complete dock assembly (antenna, speaker, mic and all) and replaced it... no go.

I don't know where to go from here, I've had it apart and nothing really sticks out as a problem. I'm pretty handy with electronics so I'm thinking of checking to see if the battery is good or not, however there were no signs of the battery starting to wear out. Can the battery literally just stop working? And even if the battery is worn out, shouldn't the phone work while plugged into the computer?

Any help is greatly appreciated.

Thanks,

- Kris

Answered! View the answer I have this problem too

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check the battery, if it has a voltage lower than 3v, the might not respond to anything - and if it's not responding, the usb port won't charge it (or only at ~2.6v).

if the voltage is ok, try to put it into dfu mode and restore it with itunes.

you could also check all connections - especially nr. 4

good luck

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Comments:

Hi Markus, thanks for the reply.

I've checked the voltage and it is sitting at 2.55V. I understand that this means the battery is dead, and that the iPhone will not boot with this low a charge. But does this mean the battery is shot (worn out) and should be replaced? Or is there a problem with the charging system not properly charging the phone when I plug it in?

Thanks again for your help,

Kris

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i think the battery will work normal after you charged it, but how to charge it - there are mayn ways to get the battery to the point were it charges normally again. i use a simple device for those li-po cells, others "shock-charge" the battery for a few seconds with a 9v battery. sometimes batteries do that, a dropping can be pretty serious for a li-po cell

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