Galaxy S24 and Galaxy S25 owners say their phones began overheating and losing battery life within hours after Samsung’s April 2026 security patch, according to a report from Android Authority.
One commenter, who uses the handle un4getable302, tied the trouble to a system component: "Some reports link excessive battery drain on their Galaxy S25 or S24 devices to a system app called Knox Matrix, which allows Samsung devices to communicate with each other and isolate those affected by cyber threats so they don’t propagate over a network."
The scale of the problem emerged in a reader survey run by Android Authority after the first complaints appeared. More than three-fourths of the readers who took part in that survey said they had experienced similar overheating or rapid battery loss, with some users reporting their battery was exhausted in just a few hours.
The reports followed the rollout of Samsung’s April 2026 security patch. Android Authority noted that owners of both the Galaxy S25 and Galaxy S24 began reporting the symptoms after the update, and the outlet ran its survey to gauge how widespread the issue was among its readership.
Details about what exactly is triggering the drain remain murky. Some reports and commenters have pointed to Knox Matrix, a system app designed to let Samsung devices communicate and isolate compromised devices to stop threats spreading. Others linked the problem to Meta apps. A few commenters went further and suggested the battery drain could be a step toward planned obsolescence — an allegation that underscores how quickly user frustration can harden into distrust when devices fail after an update.
Despite the volume of reports and the survey result, the exact cause is still unknown. Samsung has yet to acknowledge the problem publicly, and the company has not issued a fix. That silence has left affected owners reliant on community posts and third‑party reporting to diagnose and track the issue.
The tension in the coverage lies in the mismatch between the scale reported by readers and the lack of an official response. More than three‑quarters of surveyed readers reporting the problem is a strong signal that this is not a handful of isolated incidents, yet without confirmation from Samsung or a software patch, owners are left to guess whether Knox Matrix, third‑party apps, or another element of the April patch is responsible.
For users the immediate impact is practical and sharp: devices that once lasted a day or more now die in just a few hours, and some owners report their phones running unusually hot during the drain. Those symptoms raise worries not only about convenience but also about device health and safety, and they have pushed conversations about accountability and vendor responsiveness into public forums and comment threads.
The most consequential unanswered question now is whether Samsung will identify the fault and release a targeted fix — and how quickly it will do so. With the cause unconfirmed and no patch available, affected Galaxy S24 and S25 owners face continued disruption and a growing demand for answers from the company that made their phones.
