Network from iOS “Unable to join the network”
See the following Apple articles:
If your iPhone, iPad, or iPod touch won’t connect to a Wi-Fi network
If your iPhone, iPad, or iPod touch won't connect to a Wi-Fi network - Apple Support
Recommended settings for Wi-Fi routers and access points
Recommended settings for Wi-Fi routers and access points - Apple Support
“This network is operating on
Wi-Fi channels in use by several other nearby networks.”
If you and your neighbors set WiFi to the same channel, they can interfere with each other. It is best to choose channel 1, 6 or 11. These do not overlap and therefore disturb each other as little as possible. You can use various apps to see which networks are active in your area, in order to choose the best channel for your own WiFi.
It is best to choose a WiFi scanner on a smartphone, so that you can measure WiFi activity in all places where you want to use WiFi.
See -> Network Analyzer - iOS
https://apps.apple.com/us/app/network-analyzer/id562315041
Wi-Fi analyzer voor computer:
WiFi Analyzer Microsoft.
WiFi Explorer - Mac App Store
If they are On, turn Off Hotspot & VPN.