Original topic:

Samsung S25 Ultra charging port corrosion

(Topic created: 07-14-2025 08:24 PM)
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MarcusPreest
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Galaxy S25

I found out my 3 month old Samsung S25 Ultra has corrosion on the charging port. I'm not even sure that it was exposed to water and yet it has green color in the port like a old rusted penny. 

Anyone had any success dealing with this other than paying insurance premium? The customer service people have made it clear that this is NOT covered under warranty. I feel like I've been scammed; my S9, S22+ have both been exposed to water (S22+ took a swim in the ocean with me) and never had a corrosion issue! Why is my 3 month old phone having corrosion? Are they trying to drive me to Apple? So upset 😕

12 Replies
Robin621k
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Galaxy S25
I had the exact same problem, not covered under warranty. Care+ $99 to fix it.

The tech had 3 S25U with the same exact problem on the same day.

It was humidity that did that to my phone, in and out of AC to high humidity corroded the pins in my port.

This should not happen in a $1300 phone.
MarcusPreest
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Galaxy S25
No it shouldn't... older S___ models and never had this issue. What's with the inferior quality with the s25 version? If I get the usb port replacement it comprises the factory seal (not that it matters if the port is vulnerable). Where is the recall? Support is no help! This is how you lose loyal customers.
Robin621k
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Galaxy S25
I had no choice, I had to get it fixed. I could only charge wirelessly and couldn't use any USB devices. If may repair was done properly, I am not too worried about them putting the phone back together.
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MarcusPreest
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Galaxy S25
Same... i guess i will have to do something. The asurion tech brought up the factory seal issue; basically saying the"water resistance" is decreased after opening the phone. Unfortunately seems it didn't have much resistance to begin with
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Oxford
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Galaxy S25
After repair, I would suggest either getting a usb-c cover plug, or get a usb-c magnetic adapter that way your usb-c will never be exposed to the elements.wL8JXeQ29G.jpg
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AlanQuintana
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Galaxy S25
Yeah... I think im having the same issue 😕
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Tom6068
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Galaxy S25

Any tech device that has ports in them for charging/connections, etc will be susceptible to moisture. The build up does not happen all at once but over time being exposed to humid to dry environments where the port is used/exposed, will cause this to happen. Note this happens almost always during summer months. 

 

Also, iPhones and other brands have the same issues, it is not a unique issue only to S*** devices.

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MarcusPreest
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Galaxy S25
Not totally disagreeing with you but a few points to refute your claim.

1) the phone is only 3 months old
2) numerous conductive metals resist oxidation and could be used for these ports
3) my Samsung s22+ was submerged in the Atlantic ocean for a few minutes, removed and air dried and proceeded to work fine for years afterwards (still have it & still works fine).

All of these points indicate that the ports on the s25 Ultra are either faulty, manufactured carelessly or worse made with planned obsolescence in mind. The fact that so many others are having thus problem is unsettling
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Tom6068
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Galaxy S25
You did not refute anything other than make statements on non-corrosive metals, an anecdotal experience with your S22 and the age of the device, all of which I did not mention.

I suggest reading on how ports are manufactured and what elements/environmental effects cause corrosion, even with having the best anti-corrosive properties.
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