Focus on these steps-
1 Make sure bluetooth is turned on
2 Determine which pairing process your device employs
3 Turn on discoverable mode
4. Make sure the two devices are in close enough proximity to one another.
5 Power the devices off and back on.
6 Power down likely interferes
7 Charge up both devices you're trying to pair
8 Delete a device from a phone and rediscover it.
9 Get away from the Wi-Fi router.
10 Make sure the devices you want to pair are designed to connect with
11 Update the hardware’s firmware
12 Limit data shared between devices