Early reports show isolated One UI 9 battery drain on the Galaxy S24 Ultra, though most users appear unaffected following the October update.
Samsung officially pushed out its One UI 9.0 update to Galaxy S24 series phones in early October, bringing the flagship devices forward to Android 17. The major software upgrade introduces new features along with refreshed user interface designs, which Samsung had tested in beta form across several of its devices for months. Following the public release of the official software, however, at least one user reported severe One UI 9 battery drain on their Samsung Galaxy S24 Ultra. The customer complained that the software upgrade made battery life significantly worse, increasing the rate at which the battery drains to a degree that was claimed to be considerably more than it should be after a major update.
To substantiate the grievance regarding increased battery drain, the user shared a screenshot documenting their daily smartphone use following the update. The captured usage metrics showed a screen-on time calculated at just 3 hours and 15 minutes, while total device use time reached 5 hours and 20 minutes. Across that operational window, the daily workload depleted the phone battery from a full charge down to 5 percent remaining capacity.
According to a report from Sammy Fans, the issue with increased battery drain on the Samsung Galaxy S24 Ultra does not appear to be widespread. The report notes that after the customer raised the issue, Samsung’s Indian subsidiary advised them to contact a service center to inquire about potential assistance. This guidance implied that a hardware inspection or a battery replacement might be in order for that specific handset.
The report also pointed out that a majority of consumers who own the phone and updated to One UI 9 are happy with the new software, implying that elevated power loss is not affecting many users. It also noted that experiencing a sudden battery drop directly after a big update is considered normal. While the individual case resulted in rapid depletion, the report indicates that the upgrade has proceeded without similar complaints for most Galaxy S24 Ultra owners.
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Luiza Mosneagu is Reviews Editor at Droid Tools. A psychologist by training and tech writer by passion, she has tested over 60 Android devices since 2020 - always for a minimum of two weeks before writing a word. Her focus is camera quality, everyday usability, and cutting through marketing claims to tell you what a device is actually like to live with.
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