How can I back up data to an external storage device?

On your Cat S52 device
1. Connect the type C USB connector between the device and the external device (for example, a laptop).
2. Pull down the notification bar and “Android System charging this device via USB” tap on this and select the option for example select Media (PTP).
3. On the laptop, you can select the option that you want PTP the laptop will then set up the device automatically (Windows 10).
4. Select item to transfer.