Before you decide to buy a HiFi (SBC/AAC/aptX/aptX HD/LDAC) Bluetooth headphones or speaker you can verify your mobile first!

The App is very easy to use
1.Turn on mobile Bluetooth and connect/pair a device (ex.headset or speaker)
2.Click "Check Bluetooth A2DP" to list current using codec local phone codecs and selectable codecs
3.Click to switch a codec