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Samsung devices battery drain & overheating after July 2026

Updated 5 times since CLSTR started tracking revisions of this situation.

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2026-07-31 04:21 UTC → 2026-07-31 20:50 UTC · added removed

Samsung devices battery drain and & overheating after July 202 2026

Reports of rapid battery loss The battery‑drain and overheating continued after problem linked to Samsung's July 2026 One UI 8.5 security patch. patch has persisted and spread. In addition to earlier complaints reports from Iceland, Romania, Bulgaria, Germany, and the Galaxy Watch 6‑8 and series, users of the Galaxy S24 Ultra/S25 Ultra, users Ultra and S25 Ultra in Iceland, Romania, Bulgaria China, Finland, Mexico, Portugal, Egypt and Germany reported other regions continue to experience standby drain losses of 5‑7 % per hour, with some observing up devices dropping from 85 % to 24 5 % loss per hour and device temperatures approaching within a few hours. Temperature readings regularly exceed normal limits, reaching up to 40 °C. °C and isolated cases as high as 76 °C, while a minority note slower charging speeds. Investigations still point to a stuck an encrypted WhatsApp backup that creates a wakelock, preventing remains active after the processor from entering update, creating a wakelock that prevents low‑power states. Samsung has not publicly acknowledged the issue; suggested mitigations remain clearing the cache partition and cancelling officially confirmed the WhatsApp backup. The same patch also addresses roughly 60 security vulnerabilities, including five classified as critical, and is being rolled out to 34 Samsung models worldwide. No issue nor released a permanent fix has been released, and fix; users continue are advised to rely on work‑arounds while monitoring persists. monitor battery usage, limit background apps, clear the cache partition, and await a corrective update.

Versions

  1. 2026-07-31 20:50 UTC Samsung devices battery drain & overheating after July 2026
  2. 2026-07-31 04:21 UTC Samsung devices battery drain and overheating after July 202
  3. 2026-07-30 22:52 UTC Samsung devices battery drain after July 2026 update
  4. 2026-07-30 00:05 UTC Samsung devices battery drain after July update
  5. 2026-07-29 09:59 UTC Samsung devices battery drain after July update
  6. 2026-07-27 06:53 UTC Samsung Galaxy Watch battery drain issue

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