Use APKPure App
Get Smartwatch PMK old version APK for Android
BT Dialer communicate with SmartPhone by install this apk in SmartPhone
（1） first, install this apk in your smartPhone
（2）second, if you first install this apk, Set up some conditions according to the operation steps.
（3）third, turn on the bluetooth in your smartphone and bt dialer
（4） finally, you can start the communication.