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Repair information and guides for the fifth generation of iPhone. Model: A1387

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[SOLVED] LED light always on, what could be the reason?

My LED light on my iPhone 4S stay always on. I try to re-initialyze the phone without success on LED light (the camera flash in fact).

I have all updates done, and it doesn't change anything, even when I turn off the phone.

Otherwise it works well. The phone isn't cracked or breached.

Any solution ?

Thanks for your time !

Update

Testing with parts of my wife's iPhone... and it's working....

No problems with connectors in both parts

So I have to change for new part....

Final Update

Replacing Rear camera quite easily... and it works well now.

Thank you all for your disponibility !

Answered! View the answer I have this problem too

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I will check the camera to see if it works.... Maybe I have to change these ?

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Interesting problem, I have had 1 phone in my shop with this exact problem and it turned out to be corrosion on the motherboard (water damage) , I would disassemble your phone and inspect all parts and treat any corroded spots with alcohol and a toothbrush, good luck. iPhone 4S Teardown

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Thanks for your quick answer, but I'm sure that I never had water damage.

I'll try to disassemble it and inspect it... Wait and See !

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Thanks I would love to hear what you find out.

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Nothing special found after inspection of my iPhone...

No corrosion, all connectors OK, the liquid indicator is white....

Maybe it is an hardware issue ?

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Yes, I would try replacing the Camera-led next, they are cheap, if that doesn't work you should try restoring it, several times if necessary, I know that's a pain but I have had to do that several times to make a camera work correctly, something else, if you don't have a flashlight app I would get one and see if you can turn the led off with the app open, keep us posted, good luck !

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Hi ! It doesn't change anything with an App with flash, like iTorch.

I can turn on and off the light with the App. When closing the App, the symptoms are the same....

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Last time I had a wet phone with this issue I cleaned the connectors for the camera and it worked fine afterwards.

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Yes but mine wasn't wet at all !

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It is most likely a bad connection of the camera. Simply take off the rear plate and disconnect/reconnect the camera and that will fix it. GOOD LUCK!

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Generally this is related to water damage. Replacing the camera might work, but more often when I see this finding corrosion on the board and cleaning it is what solves the issue.

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