615 bytes added,
13:49, 22 June 2021 {{GD Template Impl}}
1. Make sure you have set the correct country code using raspi configuration.
2. Use the 'iwlist channel' command to view the currently allowed frequency bands to be connected. These values are different for different countries.
iwlist channel
[[File:Iwlist-show.png|none]]
3. Check the frequency band settings of your router 5G WIFI
[[File:Routers-5G-setting.jpg|none]]
<!--Add review function! -->
<comments />
<!--Please choose the -->
<!--Remove other categories, just keep the appropriate categories -->
[[Category:Product Manual]]
[[Category:Raspberry pi]]
[[Category:Knowledge]]