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Smartphone Samsung Galaxy A50 (SM-A505F) mis sur le marché en 2019.

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dropped phone in water no screen but there is sound and vibrations

so I dropped the phone in the water for about 20 seconds without realizing then pulled it out the screen functioned when I pulled it out it turned on because of a notification however the next morning the screen no longer functioned but the phone was playing my ringtone and buzzing a lot. it charges and the sign pops up but the screen won’t display anything other than the charging symbol.

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Solution retenue

Hi @lachlan01 ,

As you know water, electronics and electricity are not a good mix.

The impurities in the water causes corrosion and provides circuit paths for the electricity which were not in the phone's operating design and could damage the components. The corrosion starts immediately and is ongoing until it has been properly cleaned away.

First do not turn on your phone and then you need to remove the battery as soon as possible from the phone to minimize any further damage.

Then you need to dis-assemble the rest of the phone and clean all the affected parts using Isopropyl Alcohol 99%+ (available at electronics parts stores) to remove all traces of corrosion etc. Do not use "rubbing alcohol" as in some cases this is only 70% IPA or less, can contain additives and is not as effective. If you do check the label to verify the amount of IPA. The higher the percentage of IPA the better.

Here is a link that describes the process.

Electronics Water Damage

As always with electronics, especially surface mounted PCBs be gentle when handling and especially when brushing away the corrosion. You do not want to remove any components from the board. You may also have to remove any shields covering the CPU etc as water may have got in under them.

Hopefully after you have done all this the phone might possibly work correctly again.

Here’s the ifixit Samsung Galaxy A50 Disassembly guide that shows the dis-assembly of the phone which may help.

If this process seems too daunting, take your phone to a reputable, professional phone repair service, experienced in liquid damage repair and ask for a quote for a repair. If you decide to do this, do it sooner than later.

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When the corona situation will stabilize. Please go to a Samsung service point. I guess they can help you.

By the way, I am not sure but you may try this,

heat your phone near 38°C-40°C for 10-15mints. This heat will vapor the water on your phone.

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Lachlan Harvey sera éternellement reconnaissant.
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