Idk bout the phone, but I use TuneEcu android version on a Samsung android tablet. When I plugged the Lonelec cable into the tablet, it automatically did the driver install, or whatever it does to recognize the cable. Did your phone recognize the cable? And when you are going thru the cable you are not supposed to say yes to the Bluetooth access obviously. If you do it will only read your ecu but not allow you to download a tune, so always say no to the Bluetooth.
I am able to do all functions on the tablet. Is it different for the phones? If you also have a tablet you can load the TuneEcu onto the tab from your purchased apps since you already paid for it