Normally, CK210 will automatically reconnect the last 1 connected device once power on; for other devices, you may need to manually click "Avantree CK210" on your phone to reconnect.
Important notice: To ensure the success of auto re-connection with 2 devices (including the last 1 paired device), highly suggest you to activate Bluetooth on the 2 phones before you open the car door.
If it can't always reconnect your phone, you may have to reset to factory default settings and re-pair it.
For pair and connect issue, click the following for help:
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