I have problem to connect Samsung Galaxy A3 running Android 4.4.4 with Phone Manager. It looks like Android 4.4.4 version is the issue. I have tried 3 other types of Galaxy and it works:
–Samsung Galaxy J5, Android 5.1 – is OK
–Samsung Galaxy Grand Neo, Android 4.2 – is OK
–Samsung Galaxy S Advance, Android, 4.1.2 – is OK
Any suggestion how to connect Galaxy A3 Android 4.4.4 ?