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[SITUATION] · [ACTIVE]

4 clusters · 23 sources · 7 days · First seen 8 days ago · Last updated 1 day ago

Samsung devices battery drain & overheating after July 2026

Entities: Galaxy S24 Ultra · Galaxy S25 Ultra · Samsung Galaxy S25 Ultra · Samsung Electronics · Samsung Galaxy S24 Ultra

Overview

The battery‑drain and overheating problem linked to Samsung's July 2026 One UI 8.5 security patch has persisted and spread. In addition to earlier reports from Iceland, Romania, Bulgaria, Germany, and the Galaxy Watch 6‑8 series, users of the Galaxy S24 Ultra and S25 Ultra in China, Finland, Mexico, Portugal, Egypt and other regions continue to experience standby losses of 5‑7 % per hour, with some devices dropping from 85 % to 5 % within a few hours. Temperature readings regularly exceed normal limits, reaching up to 40 °C and isolated cases as high as 76 °C, while a minority note slower charging speeds. Investigations still point to an encrypted WhatsApp backup that remains active after the update, creating a wakelock that prevents low‑power states. Samsung has not officially confirmed the issue nor released a permanent fix; users are advised to monitor battery usage, limit background apps, clear the cache partition, and await a corrective update.

Claims

What the coverage asserts, and how well corroborated each claim is across sources.

[● 4 SOURCES] The July security update released at the end of July caused rapid battery drain on Samsung Galaxy S25 Ultra and Galaxy S24 Ultra. (supported by articles efa61fdd-7370-49ae-aa41-07e3393917d3, cdc97ee3-3c2b-4801-b06e-c05e05133fcc, 0a9bf4a1-687a-4a37-a9e)
[● 4 SOURCES] Battery level can drop from about 85 % to 5 % within a few hours after the update.
[● 4 SOURCES] Samsung has not officially confirmed the problem nor released a fix.
[● 3 SOURCES] Devices become warm, reaching temperatures up to about 40 °C even when idle.
[● 3 SOURCES] The likely cause is a stuck WhatsApp encrypted backup process that creates a wakelock, keeping the phone active. (user investigations)
[● 2 SOURCES] Charging time for a full charge increased to roughly three hours from about 70 minutes.
[● 2 SOURCES] A likely cause is background processes stuck in loops, possibly related to encrypted WhatsApp backups.

Timeline

1 day ago

[TECHNOLOGY] 11 sources
Samsung Galaxy S24/S25 Ultra battery drain, overheating after July 2026 patch
Samsung’s July 2026 security patch triggers rapid battery loss, overheating and slower charging on Galaxy S24 and S25 Ultra phones worldwide; Samsung has not yet confirmed or fixed the issue.
4 days ago

[TECHNOLOGY] 5 sources
Samsung Galaxy S25 Ultra battery drains rapidly after July security update
Samsung's July security patch triggers rapid battery loss, overheating and slower charging on Galaxy S25 Ultra and S24 Ultra; Samsung has not confirmed or fixed the issue.
5 days ago

[TECHNOLOGY] 2 sources
Samsung's Galaxy Watch battery drains after update as One UI 9 beta for S25 appears
Samsung Galaxy Watch users report rapid battery drain after a recent update, while a One UI 9 beta for the upcoming Galaxy S25 phones appears on a South Korean server.
8 days ago

[TECHNOLOGY] 6 sources
Samsung Galaxy Watch battery drain spikes after July update
Samsung Galaxy Watch 6‑8 users experience rapid battery loss after the July update; issue likely software‑related, no official response yet.

Sources

androidgeek.pt · bild.de · borncity.com · elbalad.news · futurezone.de · gamestar.de · gizchina.com · imtest.de · innovationhouse.is · laverdad.com.mx · m.jurnalul.ro · mobiili.fi · mobilebulgaria.com · mobilizujeme.cz · mojandroid.sk · netthings.pt · netzwelt.de · schmidtisblog.de · segel-filme.de · svetandroida.cz · svetapple.sk · techbyte.sk · zive.aktuality.sk

This summary has been updated 5 times: see revision history