A Galaxy Watch 5 Pro user says they woke up with a painful blister and an apparent skin burn after the device overheated overnight. The user, who had worn the watch to bed for three years, reported on the Galaxy Watch subreddit that the watch was fully charged at bedtime but completely dead by morning, and it no longer turns on.
The user is not alone. Other owners described similar problems with the Galaxy Watch 5 and Watch Ultra 2. One commenter said their partner's Galaxy Watch 5 also burned her in her sleep, leading her to stop wearing it altogether. Another user reported a similar issue with a Galaxy Watch 2, though without blisters. Many reports have mentioned contact dermatitis, but the blistering described in the original post does not match that condition.
Android Central says the rapid heating and severe battery drain point to an internal fault, and questions remain about what went wrong and whether the usual overheating safeguards failed. Android Central has reached out to Samsung and will update the article when it responds.
The report comes after a separate incident in South Korea, where a Galaxy S24 user said their phone swelled and then caught fire during normal browsing. Fire crews confirmed a lithium battery ignition, and the user was treated for burns and smoke inhalation. Samsung reached out quickly in that case, and a similar issue was also reported with a Galaxy S25 Plus.
Source: Android Central · Summarized by HeadlinesBriefing