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

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Very hot and Huge battery draining

Hello, sorry by advance if my english is bad.

I have a problem with my Iphone4s since few days.

My battery have 30min max of life. the motherboard is really hot, but the battery stay normal temperature.

if I disconnect the ribon cable of dock connector (under the metal plate with S/N), hi temperature go back to normal, but battery draining il always present, but less.

Maybe short-circuit in dock connector, or motherboard of my Iphone4s is bad ?

I think to buy a new dock connector, but I'm not 100% sure that probleme coming of this part.

My battery seem to be damaged or iOs can't correctly calcul the real % due to massive discharge last days.

All test will be do in Flying Mode On (all radio off)

Visualy there is no default.

Answer this question I have this problem too

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This may sound far fetched, but I have seen this exact issue solved by a software restore. I had a customer bring me a phone with similar issues and thought that it absolutely had to be a hardware issue, and I tried all the things that you did with no results. As a last ditch effort, I did a restore and set it up as a new phone (that part is key), and it worked perfectly after that.

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Try 3 times to restore without success, but il clean with wd40 and sandpaper the pins in the dock. The phone stop to be hot. I think two (or more) pins had be in contact because of the oxidation ( I will see a verdigris )

Now the phone works well, but the battery suffered from this problem, i think.

I will Jailbreak my phone at the occasion to see wear level of my battery (no way to know it without jaibreak, it seems to me ?)

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