I spent about $9 for (2) JD Digital USB Type-C to USB OTG Cables by Revain, paid. When I upgraded my cellphone, the newer phones use a faster USB-C slot. These cables allow me to connect a flash drive to my cellphone and transfer files. The second cable works great as a backup. Both work great. Just make sure you "disable" the connection by selecting the option on your phone before disconnecting the USB stick from the cable. Just follow the pop-up instructions on your phone.