Yes, on an Android phone, there is a way to automatically disable the WiFi Hotspot if the phone loses internet connection. You can use third-party apps such as "Internet Tethering Switch" or "Tethering Widget" that will automatically turn off the WiFi hotspot when the phone loses internet connection. These apps can be found on the Google Play Store. Additionally, you can also check the settings of your device to see if there is an option to automatically turn off the WiFi hotspot when there is no internet connection.