Samsung’s upcoming One UI 8.5 update was expected to be a mild refresh, but new leaks from the Galaxy S25 Ultra firmware suggest it’s hiding something more interesting — a smarter, more efficient way to save battery. Alongside a few subtle design tweaks, a new “Network Battery Saver” feature has surfaced, and it could quietly help your phone last longer without you having to touch a thing.
According to a deep dive by Android Authority, the feature uses Samsung’s “Personal Data Intelligence” system — the same one behind features like Now Brief — to learn your habits and cut down on network activity when your phone’s idle. Essentially, it figures out when you’re asleep, relaxing at home, or just not using your device much, and automatically limits background network access to reduce drain.
One line in the leaked code sums it up neatly: “Save battery by limiting network performance when your phone isn’t likely to be used, such as when you’re sleeping.” Another mentions that users can control how this feature behaves: “Network battery saver uses Personal data intelligence to determine when to apply network performance limits… You can manage the apps and services that use Personal data intelligence in Settings.”
It’s an opt-in feature, so you’ll need to enable Personal Data Intelligence first. Once active, it should help cut power consumption from background syncs, notifications, or network polling — the little things that slowly drain your battery overnight. With relatively smaller batteries and slower charging speeds on Galaxy flagships compared to their Chinese rivals, smarter power management could make a noticeable difference.
The update is expected to launch alongside the Galaxy S26 series in Q1 2026, with rollouts for existing flagships like the Galaxy S25 series likely to follow shortly after.
For all the talk of flashy AI features lately, Samsung’s approach here feels refreshingly practical — using intelligence not for gimmicks, but to squeeze more life out of the same battery.
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