ANT+ is easier to develop for and has far fewer issues and was available at the same time as Bluetooth, so we had something better: https://www.thisisant.com/c

ANT+ is easier to develop for and has far fewer issues and was available at the same time as Bluetooth, so we had something better: https://www.thisisant.com/consumer/ant-101/what-is-ant/ https://www.thisisant.com/consumer/ant-101/what-is-ant/ But phone manufacturers opted for Bluetooth instead. Go ask them why. Sony still supports ANT+ on their phones, but it's mostly only used to connect to fitness equipment (which has also mostly moved to Bluetooth because it is what most phones support.)