One UI 9 is breaking Wi-Fi, mobile data, and even SIM detection for some Galaxy users
Multiple users on Reddit and Samsung Community forums documented problems following the stable One UI 9 rollout over recent months. Toggling airplane mode or restarting phones provides temporary relief but does not resolve the underlying issues. Samsung has not yet provided a permanent solution, despite the update introducing new features and Galaxy AI capabilities to older flagships.
Key points
- One UI 9 update triggered Wi-Fi, cellular data and SIM detection issues
- Temporary fixes include airplane mode toggle and phone restart
- No permanent resolution identified by Samsung
- Problems reported across multiple Galaxy device users
Summary and key points written by AI from the headline and a short excerpt, so they can be incomplete or wrong. Android Authority did the reporting; read the original for the full story.
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