17.09.2020
OnePlus Buds User Guide
https://support-cn.oneplus.com/app/answers/detail/a_id/5391/~/oneplus-buds-user-guide#Connection and Use
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Automatic reconnection
After OnePlus Buds have been successfully paired with a device, the buds will
automatically reconnect to the device each time the buds start.
If reconnection fails, open the Bluetooth setting on the device, tap Previously
Connected Devices and search for OnePlus Buds, and tap the buds to connect
them.
Reconnection after a long-distance disconnection
If the OnePlus Buds have been disconnected from your device because you’re too
far, and you return to the effective distance of the connection within 10 minutes,
OnePlus Buds will automatically reconnect with your device. If there is no reconnection
for 10 minutes, the buds will automatically shut down. In this case, you can put the
buds into the charging box, close the cover, and then open it to reconnect them.
New device connection in connected status
In case you need to connect the buds with another device, put the buds into the
charging box and connect them based on the instructions in "Device connection"
above.
Functions and Operations
Call
Answer a call: double-tap the touch area of the bud.
Hang up a call: double-tap the touch area of the bud.
Reject a call: tap and hold the touch area of the bud for 5 seconds.
Device switchover
Press and hold either bud (while powered-on) for 3 seconds to return to the last
connected device.
Music/standby