Careful Who You Upgrade, WPA3 and WiFi 7 Don't Always Play Nice With Legacy Hardware - PC Perspective

Upgrading to WPA3 or Wi‑Fi 7 can prevent some legacy devices from connecting because they may not recognize newer security settings.

Even WPA3-Personal Transition Mode may not help if older hardware rejects unfamiliar security options.

Before replacing a router or changing security settings, users should check whether existing phones, laptops, and other devices support WPA3 and Wi‑Fi 7.