One UI 9 Bug Leaves Some Galaxy Phones Stuck During Setup

Samsung says an unstable system WebView triggered by the update can block account sign‑in and the company has offered temporary workarounds while a permanent fix is pending.

Overview

Users reported that after installing One UI 9 some Galaxy devices, notably the S26 Ultra, froze on the initial setup screen with an error reading “The webpage is unavailable” for a Samsung account page.
Samsung confirmed on Thursday that the update can trigger an unstable Android system WebView on certain networks and advised troubleshooting steps including updating the browser and using Wi‑Fi for account sign‑in.
Published official workarounds include using the web version of samsung.account.com, switching networks to Wi‑Fi, and updating browsers while user-sourced bypasses include force reboots, booting to Safe Mode with connectivity off, removing the SIM, or using airplane mode.
Reports of similar startup freezes or access-denied errors have appeared for other recent Galaxy models such as the S24 and S25 series, but Samsung has not provided an estimate of how many devices are affected.
The bug highlights risks in the One UI 9 rollout because the Android system WebView component renders in-app web pages, and observers say the issue could be resolved in a future software update though Samsung has not announced a timetable.