Overview
- One UI 9 Beta 4 began rolling out to Galaxy S26 phones on Tuesday as a roughly 1.25GB over‑the‑air update that carries firmware ending in ZZG4 and includes the July 2026 security patch.
- The beta targets specific interface and system bugs such as lock‑screen clock scaling on rotation, Quick Panel stuttering, the navigation bar disappearing during some games, truncated live‑notification timers, Routines failing to set Bluetooth media volume, and the Privacy Display routine not toggling correctly.
- Samsung is also staging the July 2026 security patch widely across recent Galaxy models, with S26 builds (S94xBXXS4AZG5), S24 builds (S92xNKSS6DZG1), and Z Fold/Flip 6 builds (F956BXXS4DZF1 and F741BXXS4DZF1) reported and the package fixing 57 vulnerabilities.
- Rollouts are staged by region with India, South Korea and parts of Europe seeing updates first and the United States expected to receive the beta and security packages shortly.
- One UI 9 is Android 17‑based and focuses on under‑the‑hood changes such as stricter background memory limits, cross‑device handoff and performance tuning, and Samsung is treating these beta and security builds as final stabilization steps before wider release after the new foldable launch.