User guide
I cannot connect a device to my MiFi
On your MiFi: Make sure the Network Signal Strength indicator 
displays at least one bar and that the type of network is displayed on the Home screen (for example, 5G).
On the device you want to connect: Make sure Wi-Fi is turned on. The MiFi will broadcast its own wireless network and name. Open the list of available Wi-Fi networks. Select the MiFi primary or guest network and enter the password.
NOTE: You can find the primary network name and password by tapping Wi-Fi Name/Password on your MiFi – swipe left to see the guest network name and password.
Once connected to the internet, the MiFi Home screen displays the connected device.