HTC Desire 12s User Manual page 12

12 Unboxing and setup
3. Push the tip all the way into the hole until the tray ejects, and then pull the tray out.
4. Do the following to place your nano SIM and microSD cards into the tray:
With the gold contacts facing down, place two nano SIM cards into the SIM 1 and SIM 2
holders of the tray. Make sure to align the cut-off corners to the notches on the holders.
When you need to use a microSD card, remove your second nano SIM card and then place the
microSD card on the SIM 2/SD holder. You cannot have both the second nano SIM card and
the microSD card inserted at the same time.
5. When reinserting the tray, make sure it is facing up so that your cards don't fall out. With the
outer card holder between your fingers, steadily slide the tray all the way into the slot.
6. Make sure the tray is fully inserted and doesn't protrude from the slot.
Follow the same procedure above to eject the tray and remove your cards. Before ejecting the tray,
make sure to unmount your microSD card first. See
Both SIM 1 and SIM 2 cards can be 4G LTE
cards. To find out how to set the preferred card
for your mobile data connection, see
your nano SIM cards with Dual network
manager on page 16.
Unmounting the storage card
Managing
on page 62.