Important: When you have multiple SIM cards/eSIM profiles on your iPhone, it’s not possible to activate cellular data on two data plans at the same time. You can only apply them to one at a time.
Cellular data must be applied to the Ubigi eSIM profile to access the Internet.
To do this, go to: Settings > Cellular Data > Cellular Data again. Select “secondary”: the check mark will appear in front of it when it is selected