We need to configure your Android Device's Personal Hotspot to connect to your Mobile Hotspot Bridge.
The below guide shows how to change the Personal Hotspot settings on a Google Pixel running Android 10. Your Android Phone's settings menus may be vary slightly depending on your device manufacturer and OS version.
Disconnect and/or Turn Off WiFi.
Open your "Settings" App
Open the "Network & Internet" Menu
Open the "Hotspot & Tethering" Menu
Open the "Wi-Fi Hotspot" Menu
Touch "Hotspot Name" and set it to (all caps):
Touch "Hotspot Password" and enter the 8-digit key on your Bridge Device:
Touch "Advanced" and make sure that "2.4 GHz" is the selected Band.
Toggle the WiFi Hotspot "ON"