Overview
- Samsung has begun delivering the stable One UI 8.5 update to the Galaxy A15 4G (SM‑A155N) and Galaxy A24 4G (SM‑A245N) in South Korea with firmware A155NKSU9DZF1 and A245NKSU9FZF1 and downloads of about 2.4–2.6 GB.
- One UI 8.5 is based on Android 16 QPR2 and adds UI changes such as a transparent blur effect and floating bottom bars plus features like Apple AirDrop support and partial screen recording while including the May 2026 Android security patch.
- The current stable rollouts for those 4G A‑series models are limited to Samsung’s home market and are expected to expand to other variants and regions gradually over the coming days.
- Separately, trackers and firmware files show Samsung is running internal One UI 9 (Android 17) builds for many devices including S23 and S24 series phones, the Z Fold7 and several A‑series models while the public beta remains available only to the Galaxy S26 lineup.
- Users should check Settings > Software update for availability and note that Samsung has said some upcoming foldables are planned to ship with One UI 9, and reports link a wider stable release timetable to next month’s product launches.