Redit user showing Galaxy Watch 5 Pro Burn. Image Source: Reddit
A Samsung Galaxy Watch 5 Pro owner has reported waking up with a painful, blister-like injury on their wrist after wearing the smartwatch overnight. The user also claims that the watch, which was fully charged before bedtime, had completely drained its battery by morning and would no longer turn on.
The incident has raised concerns about possible overheating in Samsung's wearable devices. However, the exact cause of the injury remains unknown, and there is no confirmed evidence that the smartwatch overheated or that the wider Galaxy Watch lineup has a manufacturing defect.
Galaxy Watch 5 Pro Owner Reports Burn-Like Injury
The incident came to light through a post on Reddit's Samsung Galaxy community on October 20, 2026. The user said they had worn the Galaxy Watch 5 Pro while sleeping, as they had routinely done for approximately three years.
This time, however, they woke up to find a burn-like mark on their arm. The smartwatch had also lost its charge and refused to power on.
Images shared with the post show red marks and blister-like skin damage near the area where the watch's sensors rest against the wrist.
The combination of an apparent skin injury, a completely drained battery and an unresponsive device has led some users to suspect a possible hardware malfunction. Nevertheless, the device has not been independently examined, so the cause has not been established.
Other Samsung Galaxy Watch Users Have Reported Similar Marks
The latest report has drawn attention to earlier complaints involving Samsung's wearable devices.
Users have previously shared images of circular red marks and skin irritation after wearing different Galaxy Watch models. Reports have mentioned the Galaxy Watch 5 Pro, Galaxy Watch 7, Galaxy Watch 8, Galaxy Watch Ultra and Galaxy Watch Ultra 2.
Some users suspect overheating, particularly when the marks appear directly beneath the watch's sensor array. Others believe the symptoms could be related to prolonged skin contact, sweat, friction or allergic reactions to materials used in the watch or strap.
These reports are scattered across online forums and community platforms. They have not established a common cause or confirmed a widespread defect affecting Samsung smartwatches.
Could the Galaxy Watch Have Overheated Overnight?
One possible explanation is a hardware or software malfunction that caused the smartwatch to consume excessive power and generate localized heat.
The rapid battery drain reported by the owner has raised questions about whether the device experienced abnormal activity during the night. However, battery depletion alone does not prove overheating, and no technical inspection has confirmed this theory.
Modern smartwatches generally incorporate thermal management protections intended to reduce activity or shut down when temperatures become unsafe. Whether those safeguards operated correctly in this particular case is unknown.
Skin irritation is another possibility. A watch worn tightly for extended periods can trap moisture and increase friction, while sensitive users may react to certain materials.
Although ordinary contact irritation often produces redness or itching, more severe skin reactions can occur. A photograph alone cannot reliably distinguish a thermal burn from another type of skin injury.
Has Samsung Responded to the Report?
Samsung has not publicly confirmed that the reported incident was caused by a defective Galaxy Watch or announced a general overheating defect affecting the product range.
The company advises users to maintain proper watch hygiene, avoid excessively tight straps and stop wearing a device if it causes discomfort or irritation. Suspected hardware problems should be referred to Samsung support for inspection.
The latest report may prompt further questions about battery safety and thermal protection, but one user's experience is not sufficient to establish a product-wide safety problem.
Owners experiencing similar symptoms should document the issue and request an inspection rather than assume that all Galaxy Watch models share the same fault.
What Should Galaxy Watch Owners Do?
Anyone who notices unusual heat, a burning sensation or unexplained skin damage while wearing a smartwatch should remove the device immediately.
The following precautions can help reduce risk:
- Stop using a suspicious device: If the watch becomes unusually hot, drains its battery unexpectedly or stops working, do not continue wearing or charging it.
- Check the affected skin: Seek medical advice for blistering, significant pain or worsening redness. Do not pop blisters.
- Keep evidence: Photograph the injury and device, and record the model, battery behavior and circumstances surrounding the incident.
- Contact Samsung support: Request a device inspection and retain any relevant warranty or purchase information.
- Maintain good hygiene: Clean and dry the watch and wrist regularly, and avoid wearing the strap too tightly.
These precautions do not imply that Galaxy Watches are generally unsafe. They are sensible steps when a device appears to malfunction or causes an unexpected injury.
Final Thoughts
The Galaxy Watch 5 Pro incident highlights a concerning possibility: a wearable device that is intended to monitor sleep and health may itself require investigation if it appears to cause an injury.
The reported blister, overnight battery drain and failure to power on have raised questions about a potential malfunction. However, neither overheating nor a manufacturing defect has been confirmed, and similar online reports do not establish that every incident has the same cause.
For now, Galaxy Watch owners should remain alert to unusual heat, sudden battery problems and skin reactions. Further technical investigation and an official response from Samsung would be needed to determine what happened and whether any broader safety issue exists.