Android phone with PTP device is not supported anymore
From https://bugs.launchpad.net/ubuntu/+source/shotwell/+bug/1772913. Logging shows this:
L 24934 2018-05-27 13:44:37 [DBG] CameraTable.vala:257: Detected 1/1 USB PTP Class Camera @ usb:002,009
L 24934 2018-05-27 13:44:37 [DBG] CameraTable.vala:155: USB ESP: current_camera_count=1 port=usb:002,009
L 24934 2018-05-27 13:44:37 [DBG] CameraTable.vala:200: USB ESP: No matching bus/device found for port=usb:002,009