When your device connects to a PC, a pop up window will appear to ask you which mode you want to use. Or click “Settings”-> “Connections” -> click “USB” to select the mode.
To transfer data between the device and computer, select “File transfer” mode.
To transfer photos or files if MTP is not supported, select “Transfer photos (PTP)”.
To disable all data and file transfer connections with the computer, select “No data transfer”.
Note: Available settings and menus may vary depending on device model and software version.