When Joytune is connected with a mobile phone first time, it would automatically download the phonebook. It would announce “Loading phonebook, please wait” and the blue LED will be steady on when receiving the phonebook.
Press and hold the V- button for 2s.
Hold on both V+ and V- buttons for 2s.
Note: the phonebook data saved in Joytune will be replaced automatically when it is paired with another mobile phone.