Fourth generation iPhone. Repair is straightforward, but the front glass and LCD must be replaced as a unit. GSM / 8, 16, or 32 GB capacity / Model A1332 / Black and White.

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I have a salty water damaged iPhone 4

I have a salty water damaged iPhone 4 and it has been resting like this for a while. (maybe 6-8 months)

I am going to dissamble the phone completely and let the mother board and dock connector sink in isapropal alcohol. After that I am going to rinse it with drink water and planing to repeat this action once more.

I will apply compressed air and going to let it dry for a day. (it is 30C+ degree here) than reassamble and try a fresh oem battery with it.

What do you think? Will you suggest to remove EMI shields in the begining or may I try the procedure above first?

thanks a lot

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Murathan Araz, " resting like this for a while. (maybe 6-8 months)" let's hope it is not resting in peace forever. the major issue you will run into is corrosion damage. Salt Water will get your components to corrode very severely. The very first thing I would do is to disassemble it by following this guide. Take a careful and close look at all components and connectors. Truly assess the damage. Look for major corrosion, evaluate the pins in the connectors etc,.Take a look at all connectors as well as cable ends. After that I would suggest that you clean it a couple of times in sterile water, no drinking water. (that might have helped right after it got submerged in the sale water). Use a soft brush and clean it very, very thouroughly with the sterile water. With the amount of corrosion that I envision, you will most certainly have to remove all the EMI shields. Once you got the gross contamination cleaned, use 90%+ isopropyl alcohol and clean your parts some more. For a proper cleaning, use this guide. It was written for a 3G but it is still pertinent to your phone as well. I can not stress the importance of a good cleaning enough, so do it over and over while replacing the alcohol after each cleaning. Do not use compressed air for the cleaning since that can drive liquid as well as corrosion particles into areas that will cause trouble later on. Do not use drinking water, if you need to use water, use sterile water. Also you do not need to leave it dry for a day. Isopropyl alcohol in the higher concentration will evaporate quickly and dissipate the water. The importance here is the cleaning. Yes, do replace the battery for sure. Use this guide for that. I would also prepare to replace the dock connector. With the month long corrosion, I suspect plenty of damage to the pins, that may be irreversible through cleaning. Even with all this, there is really only a small chance that your phone will work, but I definitely would give it a try. Hope this helps, good luck.

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Sadly i had the same issue ...

What i've found as well is that some of the screws are getting damaged by the corrosion , making them sometimes impossible to remove ... hence making the dismantling operation even harder if not impossible .

Also the circuit board gets weakened ... and corrosion sticks bits together , in my case when removing the motherboard , a tiny corner broke off , on the top left side of the motherboard . Close to some transistors . Not much but i believe that was could have been enough to just break some internal wiring ...

I don't believe my phone will ever come back .. T_T

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Murathan Araz will be eternally grateful.
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