Yes, you can. Please follow below steps to pair and connect the headphones with your smart phone/tablet.
1. Make sure the transmitter is turned off.
2. Set the headphones into pairing mode - turn the headphones “off” then press and hold the MFB button for 5 seconds until the LED indicator flashes BLUE and RED alternately and you hear “Pairing” from the headphones.
3. Open your smart phone/tablet’s Bluetooth menu - search and select “Avantree AS9S” to pair and connect.
4. Reconnect - The next time you want to connect again please select “Avantree AS9S” on your smart phone/tablet to reconnect.