Weak security

Your iPhone is notifying you that the Wi-Fi Network that it is connected to does not have adequate security by today's standards. If you are interested in improving the security of your Wi-Fi then you can log into the Router and change the security settings to WPA2 (AES) in the least. If you do not know how to log into your Wi-Fi Router then please refer to the owner's manual. If you do not have the owner's manual the please contact the support team of the Router's manufacturer / provider.

More information here ➔ Recommended Settings for Wi-Fi Routers & Access Points. 

Axel F.

Hi MyKitchen1108,

From your computer or iPhone, go into your router's web setting pages. Then, type 192.168.0.1 into the URL bar. The website will prompt you for an admin name and password of the router. If you don't know what those are, check for an information sticker on the side or bottom of the router.

Once you navigate to the settings page, try to find the wireless settings > security options. Change the router to use WPA2 only, or WPA2/WPA3 if you have that option. Save the settings, then the router will likely have to restart.