Galaxy S26 Ultra stuck in setup after One UI 9

After installing One UI 9, some Galaxy S26 Ultra owners reported a bug that locks the device in a black screen and displays an error message saying the webpage is unavailable. Samsung acknowledged the problem and said it occurs when the device uses an unstable system WebView on certain networks.

Troubleshooting steps

Samsung has offered a troubleshooting guide that includes updating the Android System WebView, switching from a mobile data network to Wi‑Fi, and logging in to a Samsung account.

Users of the Galaxy S24 and S25 have reported a sudden drop in battery life, with the battery draining faster even when the phone is idle. One Reddit user said their screen time had fallen to about half of what it was before the update, and others said they were seeing the same problem.

Samsung has not confirmed a permanent fix in a subsequent update and advises owners with persistent issues to contact support or schedule a service appointment.