weak security
I phone x connection is very slow and wifi router weak security show fix all
iPhone X, iOS 16
Question marked as
To eliminate the weak security warning, change the security settings on your router to WPA3 Personal, WPA2/WPA3 Transitional or to WPA2 Personal AES. How you do that varies by router. If you don't have the instructions for your router, do an internet search for instructions for your router brand/model or if your router is supplied by your internet service provider, check their website or customer support. Also see: Recommended settings for Wi-Fi routers and access points - Apple Support
Eliminating the weak security warning won't change the speed of the wi-fi. That is affected by factors such as the speed provided by your internet service provider, the capabilities of your router, distance from the router to the device, materials such as walls, appliances, etc between the router and the device, interference from other devices in your neighborhood, etc.