Samsung EO-SG900 Mode D'emploi page 10

Connecting using an audio cable
You can use an audio cable to connect other media devices,
such as a smartphone, to the Bluetooth speaker.
Audio playback is not available from Bluetooth and audio
cable connections at the same time. If the speaker is playing
audio via Bluetooth, end the Bluetooth connection or stop
playback before connecting a device that uses an audio cable.
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If the Bluetooth speaker is connected to other devices
using an audio cable and Bluetooth simultaneously,
the speaker plays audio from the device connected
via Bluetooth. When playback from the Bluetooth-
connected device stops, the speaker plays audio from
the device connected using an audio cable.