1. With the phone facing
down, open the back cover
from the small opening at
the bottom.
2. Before inserting the cards
into the slots, you need to
remove the battery.
3. Insert a WCDMA/GSM SIM
into the SIM 1 slot, with the
card’s gold contacts facing
down and cut-off corner
facing out.
4. Insert a GSM micro SIM
into the SIM 2 slot, with the
gold contacts facing down
and cut-off corner facing
in.
5. Insert a microSD™ card
into the storage card slot
with its gold contacts
facing down.
IMPORTANT: USE A REGULAR SIM IN SLOT 1 AND A
MICRO SIM IN SLOT 2.
Inserting a smaller size SIM (such as a nano SIM with an
adapter or a modified SIM) may damage the card slot or
cause the card to not fit properly.
GSM
WCDMA/
GSM
Inserting the SIM and storage cards
HTC Desire616dualsim
gold contacts
cut-o corner
microSD regular SIM
micro SIM