How do I connect the Smart Keyboard Trio to my smartphone?
Press and hold ‘F7’, ‘F8’, or ‘F9’ for 3 seconds to enter pairing mode. On your Samsung phone, go to Settings > Connections > Bluetooth and select 'Smart KBD Trio 500' to connect it with the keyboard. Follow the on-screen instructions to complete the connection. (Page 4)
From the official Samsung EJ B3400 Smart Keyboard Trio 500 manual, page 4
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