This setting in the iOS and Android FOREVER® Mobile App allows users to work inside the app using their phone carrier’s data plan. Users can switch to this option when in an area of poor Wi-Fi for optimal performance. However, please be aware that standard data rates may apply.
To access these settings, you can complete the following steps...
iOS (Apple) products: https://support.apple.com/en-us/109323
Android products: https://www.samsung.com/uk/support/mobile-devices/how-do-i-enable-or-disable-mobile-data/