Rog Phone 9 connected without internet with channel width equal to 20/40/80/160/320 mode
Hello there,
I recently installed an Archer BE800 and am encountering an issue with the 6 GHz network:
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Device: ROG Phone 9 Pro (Wi‑Fi 7, Android 15)
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SSID: “SSID_6G”
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My phone connects to SSID_6G, but status shows “connected without internet”
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The Tether app sees the BE800 but fails to connect to it.
Troubleshooting & observations:
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If the 6 GHz channel width is set to 320 MHz, the phone connects but has no internet access.
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When I change the channel width to 20/40/80/160 MHz, the phone connects properly and regains internet.
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I expected Wi‑Fi 7 hardware like the ROG Phone 9 to support 320 MHz. However, it seems likely that despite using 320 MHz, the phone or router may fallback to 160 MHz—this pattern aligns with posts indicating BE800 and client devices defaulting to 160 MHz even when 320 MHz is enabled
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There could be regional or firmware-based regulatory limitations affecting full-width channel availability .
My questions:
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Is this behavior expected due to a router-side limitation—that is, does the BE800 force 320 MHz in a way that breaks backward compatibility with devices that can only use up to 160 MHz?
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Could Asus Rog Phone driver or firmware be causing it to connect but drop data at 320 MHz?
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Are there software updates available (router firmware or Tether app) that add smoother fallback to 160 MHz when non‑full‑width clients connect?
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Is there a recommended configuration for BE800 in mixed-device environments to ensure stable internet access for both full Wi‑Fi 7 and Wi‑Fi 6E clients?
Thank you for your guidance. If you need additional logs, screenshots, or sysinfo, I’m happy to provide them.
