A2DP Setting is a free Android app developed by Widget7 that allows you to verify your mobile before buying HiFi Bluetooth headphones or a speaker. The app is very user-friendly and easy to use, with a simple three-step process. First, turn on your mobile Bluetooth and connect/pair a device such as a headset or speaker. Second, click on "Check Bluetooth A2DP" to list the current using codec, local phone codecs, and selectable codecs. Finally, click to switch a codec.

This app is a great tool for those who want to ensure that their mobile device is compatible with HiFi Bluetooth headphones or speakers before making a purchase. It provides a quick and easy way to check the current codec and switch to a compatible one if necessary. Overall, A2DP Setting is a useful utility tool for anyone who wants to enjoy high-quality sound on their Bluetooth devices.