Tap the icon on the MiFi Home screen to make sure you are using the correct Wi-Fi password. Swipe left to view the guest network credentials if you are connecting to the guest network.
The default network security settings on your MiFi work for most Wi-Fi clients, however, some older devices may not have access. If you are entering the correct password and still unable to connect, change the network security setting to WPA/WPA2 Mixed Mode:
1. Access the MiFi Admin web UI by tethering the device to the MiFi with the USB-C cable. On the MiFi touchscreen, select Access Internet (USB & Wi-Fi) and click OK. Open any web browser and go to http://my.MIFI/ or http://192.168.1.1.
NOTE: If you have another device that can connect to your MiFi, you can use it to access the Admin web UI.
2. Navigate to Wi-Fi > Primary Network. In the Security drop-down, select WPA/WPA2 Mixed Mode.
3. Click Save Changes and Confirm. Your MiFi will reboot, and all devices should be able to connect.