TL;DR
Leaked One UI 8.5 code hints at a new Network Battery Saver feature for Samsung devices. The feature may use Personal Data Intelligence to reduce network activity when your phone isn’t being used—such as during sleep—to save battery power.
Samsung’s One UI 8 rollout is already well underway, but leaks are giving us an early look at what’s next in One UI 8.5. The update, rumored to be based on Android 16 QPR2, could bring several exciting enhancements, including privacy upgrades, AI-powered notification summaries, and energy-saving optimizations.
One standout discovery from leaked One UI 8.5 builds is the Network Battery Saver feature—an intelligent system designed to cut unnecessary network usage when your phone is idle.
<string name="nu_network_battery_saver_title">Network battery saver</string>
<string name="nu_network_battery_saver_summary">Save battery by limiting network performance when your phone isn't likely to be used, such as when you're sleeping.</string>
As the code strings suggest, this feature aims to conserve power by automatically lowering network performance when your device detects it’s not in active use (for example, while you’re asleep).
<string name="nu_network_battery_saver_set_on_dialog_title">Turn on Personal data intelligence</string>
<string name="nu_network_battery_saver_manager_pdi_dialog_message_phone">Network battery saver uses Personal data intelligence to determine when to apply network performance limits, such as when you're at home or when you're unlikely to use your phone. You can manage the apps and services that use Personal data intelligence in Settings.</string>
<string name="nu_network_battery_saver_request_pdi_on_dialog_message_phone">Network battery saver uses Personal data intelligence to determine when to apply network performance limits, such as when you're at home or when you're unlikely to use your phone. To use Network battery saver, turn on Personal data intelligence in Settings.</string>
The implementation relies on Samsung’s Personal Data Intelligence (PDI) technology—also known internally as Personal Data Engine. This system builds a local “knowledge graph” of your habits to optimize your phone’s behavior, such as when to limit connectivity or surface smart suggestions. Importantly, all data processing happens on-device, maintaining user privacy.
PDI already powers features like Now Brief, which delivers personalized updates, and provides context-aware shortcuts and insights based on your routine. Integrating it with Network Battery Saver suggests Samsung is extending its AI-driven optimization deeper into the system.
⚠️ Note: APK teardowns offer an early preview of features under development. The presence of code references doesn’t guarantee that Network Battery Saver—or any other experimental feature—will appear in the public release of One UI 8.5.
