I would like to know if anyone has successfully used a phone of around 5 years old, or more, to control a HM7000 fitted loco ?, Hornby have not given much advice on this except some brief info on incompatible ones which include Samsung A51 & J5, but state a fix is being done for these. I have a Samsung A50 I was going to try, however Hornby say a phone over 5 years old may not run the App properly or the Bluetooth Firmware may be an issue. Is this just a case of try-out or can old stuff damage the HM7000 chip ?