Samsung SM-G800H/DS User Manual page 12

Getting started
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Dual SIM models: Insert the SIM or USIM card with the gold-coloured contacts facing
downwards.
Insert the primary SIM or USIM card into SIM card slot 1 (
USIM card into SIM card slot 2 (
Single SIM models: Insert the SIM or USIM card with the gold-coloured contacts
facing downwards.
Do not insert a memory card into the SIM card slot. If a memory card happens to
be lodged in the SIM card slot, take the device to a Samsung Service Centre to
remove the memory card.
Use caution not to lose or let others use the SIM or USIM card. Samsung is not
responsible for any damages or inconveniences caused by lost or stolen cards.
).
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) and the secondary SIM or
1