Arsvita Cassette adapter is campatible all 3.5 mm Aux port ! If you mobile phone have a only port ,If your phone has only one charging port and no 3.5mm port, then you need a conversion cable to solve your music output problem. For example: If you have an Phone, then you need a Aux adapter.   If your phone has only one TYPE-C port, then you need a TYPE - C to Aux adapter . Our products can help you solve the above problems. To ensure that you can hear beautiful music!