Samsung B0 User Manual page 29

Basics
Correct card installation
► Single SIM models:
► Dual SIM models:
• U se only a nano-SIM card.
• Y ou cannot insert a nano-SIM card and a microSD card in tray 2 at the same time.
Nano-SIM card
Nano-SIM card 1
Nano-SIM card
microSD card
Nano-SIM card 2
microSD card
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SAMSUNG CONFIDENTIAL