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Samsung's tenth flagship Galaxy phone, released in March of 2019. Shipped with Android 9.0 (Pie).

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Water Damage ... Phone WORKS just no Sim reception

Hi guys,

My phone fell in the Pool a few days ago. Phone stayed on, turned on perfect after a few days. A few functions were inop, but came back after a bit of drying. Cameras, Power button etc.

Now, the only thing still NOT working is cell phone reception. Sim is fine, it just doesn’t receive a signal. It shows the Signal Bars so it knows a Sim is inserted.

I am very familiar with changing things myself on the Phone so I opened it up and inspected each part.

It was all dry but there were a few spots that had corrosion, see the pictures.

What’s the best way to clean them? Isopropyl alcohol? Metal brush?

Or is the antenna a specific part? Looks like it’s part of the motherboard….

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I would clean the corrosion with Isopropyl Alcohol and a cotton swab. Test the phone after cleaning the corrosion and get back to us on the phone's status

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Just tried....cleaned it very generously and it looks much, much better. However, NO luck on the signal :(.

Thanks for your message.

Any other idea?


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Jean will be eternally grateful.
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