Please choose the correct solution to the question: To Sync bluetooth headphones.

Solution1: Turn on the headphones and the device you want to sync with, and select the headphones in the bluetooth menu of the device. Make sure other bluetooth devices are on.

Solution2: Turn on the headphones and the device you want to sync with, and select the headphones in the bluetooth menu of the device. Make sure other bluetooth devices are off.

Answer format: solution1/solution2
Answer: solution2