S25 heating

Contact Samsung support where you are

Try good guardian app and check if it was the cable or something else. Under thermal guardian

Had the same with me twice, the latest was on Saturday. You need to let cool down and this will take a couple of hours before charging again and turning on. I did report it when happened first time.

I think you should take it to a repair shop and check the battery health because it's a bit concerning and I am worried this issue may cause battery swelling later on.

If you're going to get it repaired then please use a a shop that's recommended by Samsung just incase you have to claim on your warranty 🙏

I have the exact same problem since updating to one ui 9. It sometimes occurs after the phone runs completely out of battery.

Then it doesn't charge at all and gets warmer and warmer. Screen stays off the whole time. Solution is to deplug, wait for cooling down and try again.

I tried plugging it off one time after it had 5% again. After booting the device it shuts down suddenly at 4% with no hint. Instant black screen, no samsung shut down animation, no vibration. I guess the update messed something up with the battery state calculation. Also strange that it starts with 3% (when charging works again) instead of 1% like usually.

Never happened before.

 

Edit: Forgot to mention, that the first two times when this behavior occurred after updating to one ui 9, there was a false wet warning by the phone while being shutdown. Coming with constantly vibration until plugged off again. But this warning didn't occur again until now.

Update to the topic:

Yesterday I had a small update (Version S931BXXSDDZJ1), so I checked if something changed:
Phone charged (while switched off) to 38%, then I went to bed.
Today morning the screen was off, the phone was very warm and I couldn't turn it on. Just Black screen again.

But the phone stayed very warm, even an hour after unplugging it.
So waiting for cooling down didn't work this time, to be able to turn it on again.
Maybe because the battery had charged more than 5% this time when it something crashed and it just ran out of battery after a while the last times.

What worked for me was a Soft-Reset by holding "Power & Volume down" for more than 10 seconds untill it suddenly woke up! It booted with 40% battery.

I tried charging it (while powered on) and plugged the cable in again.
Unfortunately the lower 5mm of the screen turned multicolor and distorted for a second, when the plug hit the charging slot. Never seen this. I hope it is nothing hardware-related and only a software or driver issues.
At least charging seemed normal then, but maybe slower then usual.

 

@Lennart_oO: Are you charging your Galaxy S25 using an official Samsung plug adapter (up to 45W) and the USB cable that came packaged with the device? If so, do you have access to another charger that you can try to see if the issue persists? Alternatively, if possible, try connecting the phone to a home computer using a compatible USB cable to see if you're able to establish a stable charge in this manner. 

If the issue persists, then I recommend arranging for the phone to be inspected by an authorised Samsung engineer, who can restore the device to its default specifications, and resolve any existing software or hardware issues which might be a contributing factor. To arrange a repair, please head to samsung.com > Scroll to the bottom of the page > Contact us, and reach out to our Support Team via your preferred contact method. I apologise for any inconvenience this may cause you. 

The moderator responses across all these threads regarding the S25 overheating since OneUI9 are a little disappointing. Blaming chargers, cables, lint in the USBC port, is a scripted generic response that isn't helping anyone. The one that asked me to replicate the issue & send a log report, after I suggested I was worried the battery might explode (Samsung do have a history of that) was even more nonsensical.

The issue is pretty clear if they took the time to properly read these community pages. Samsung's latest OneUi9 update has "broken" some S25s. It is clearly a software issue. The phones get extremely hot, frighteningly hot actually, when charged whilst turned off. One wonders how they have survived without any permanent damage. I'd like to think this is a priority issue that Samsung are in the process of fixing ASAP.