Validating identity network connection
Compare security settings on your AP/router and Android Wi-Fi client and attempt to match them.
If you choose the wrong security type when adding a network, it may still be saved.
Please note the following: To determine which 802.11 standards your wireless network’s AP or router supports, look for “Wi-Fi certified” logos, or search for Wi-Fi certified products at the Wi-Fi Alliance website.
In general, newer APs and routers are required to provide backward compatibility with older generations of Wi-Fi, but data rate settings must still match.
Once your Android Wi-Fi client has a valid IP address, use Ping to verify network connectivity.
However, it is often easier just to click Forget for any misconfigured network and start fresh. WPA-Enterprise and WPA2-Enterprise log the Android Wi-Fi client into the network and deliver encryption keys using an 802.1X-capable RADIUS server.
Refer to our network troubleshooting tip, step 8, to check your AP or router's RADIUS settings.
If RADIUS is working but your Android Wi-Fi client's connect requests are rejected, look for an 802.1X Extensible Authentication Protocol (EAP) problem.
If your Android Wi-Fi client still cannot connect, get a valid IP address or ping any other system connected to the same subnet, it's time to look for wireless-specific problems.
The AP/router and client must use compatible 802.11 standards.