What is the difference between uploading data and downloading data from a drone?

1.Take out the memory card of the drone and copy the files to the computer with a card reader;

2.Connect the computer and the aircraft with a connecting cable to copy the files to the computer or add a serial WiFi module inside the drone's repeater and then connect the cell phone to the Then connect the cell phone with the serial WiFi module built into the repeater of the drone, and finally get the video data of the drone aerial photography to the cell phone through WiFi.