How to insert 2 sim cards on ulefone armor 9
a hybrid dual SIM slot is a technology that offers both features of a SIM card and a MicroSD card.
The hybrid dual SIM slot also means the OEM provided just two spaces instead of the traditional three slots for dual SIM cards and a MicroSD card. In other words, either two SIM cards are used or one SIM card slot is sacrificed to serve the role of a MicroSD slot.
Simply put, you have the two options:

Dual SIM (one micro/nano SIM + one micro/nano SIM)
One micro / nano SIM + MicroSD card