This is because Android devices use FAT32 formatting on their storage space. The largest file you can transfer with Android File Transfer MacOS is a 4GB one. If you prefer the contrary be sure to make the necessary adjustments. The default setting is that any future connections with Android devices will automatically launch the AFT app. One thing you may want to change in the settings is to block automatic connection with Android devices connected in future. You may also use the traditional cut, copy and paste. With this, you can drag and drop files to and from this app to other apps that support this functionality.
To transfer files you can use drag and drop which is fully supported by the AFT app. Use the arrow keys to move forwards or backwards in the folders. To rename a file or folder, click into the name until it becomes editable. Among other things, you can do include dragging and dropping files to move them, delete files and add folders to name but a few. To create a new folder, click on the folder icon that has a plus side next to it.
