Fifth generation of iPhone. Repair of this device is straightforward, and requires screwdrivers, prying tools, and patience. GSM/CDMA / 16, 32, or 64 GB / Black or White.

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iPhone4s is overheating and drains battery fast after water damage?

The phone was dropped in a pool. It went 10 feet deep but was fished out right away. My friend put it out in the sun to dry for 2 hours.I dried it on the inside by carefully drying the internal parts excluding the display area with a paper towel, then putting it a mixture of rice and packets of silica gel to absorb any left over moisture, but i didnt receive the phone for about a day, so there wasnt much inside. i replaced the battery and it turned on but it would burn up charge faster then it would receive charge. also the antenna dead, i think that might be related to it, but I put it in airplane mode and it still continued to use juice. Perhaps a short within a non essential part? I have disassembled the phone and reassembled it when i was drying it. I was able to turn it on and it worked but it burns energy faster than I can charge it. I have tried disconnecting a few parts and then plugging it in but it still heats up so it isn't the camera or the buttons.

Answered! View the answer I have this problem too

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How did you clean it? What have you done to prevent corrosion?

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I cleaned it with a paper towel. I didn't clean in deep because I didn't want to mess with the sensitive parts. I put it in silica gel packets and rice to remove any remainder

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Chosen Solution

vanish172, even so "10 feet deep but was fished out right away." I suggest that you clean it. It really does not matter how much water exposure it had, or how long the exposure was. what matters is which part was exposed. A "mixture of rice and packets of silica gel" are a great first aid, but they will not prevent corrosion. Disassemble your phone use this guide, and clean every part, connector and cable with 90%+ isopropyl alcohol. Make sure that you remove any EMI shield. Use a soft brush to clean the connectors and cable ends properly. Check for missing or burned components. Once it is cleaned, replace the battery. After that, reassemble your phone and re-evaluate. Until you know for sure that it is clean, any answer will most likely be a guess only. Hope this helps, good luck

Update

here are a few items you want to check as well. I hate to refer to those as fuses, but they most certainly control part of the charging circuit. First one is reference designator L3, it is a FERR-120-OHM-1.5A inductor. L4, right below it , has the identical value. Next would be the charger inductor L28 2.2UH-1.8A-155MOHM. All of these are pretty much available at mouser. com or digikey.com. Hope this helps, good luck.

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Do I have to replace the battery again? And thanks I'll try this and get back to you when done.

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since you just replaced the battery, I would keep it , for now.

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I cleaned the logic board and checked it. The heat is coming from the top of the phone and in the area of the WiFi connector

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I'm having a lot of trouble getting the EMI shields off. Is there an easy way to do it

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It was the WiFi Bluetooth chip that was acting up, I cleaned it once and nothing changed. Cleaned it a second time, turned the phone on without the EMI shield and its not overheating.

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Excellent job, congratulations on having a working phone. Best of luck to you and thanks for accepting my answer.

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Hi

After a long time of diagnosing the same problem on my iphone 4s finaly found a solution and fixed the fault by changing the charge port with a new one

I suggest you do the same thing and change the charge port

Regards

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Wi, check the answer by vanish172 from July 17, 2013. "It was the WiFi Bluetooth chip that was acting up" This is the importance of reading all the answers and comments.

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vanish172 will be eternally grateful.
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