I don't think the internal microphone is working very well, if at all, it very rarely picks up what im saying, with a long or a short press... wired or with wireless dongle.... ph dear, another one for. the list. May drop in a binder of problems for MG dealer as an early Christmas present. Hey Siri is probably triggering the phone directly, try putting the phone out of reach / in a bag and using the internal mic...its not good