In reference to fall detection, there are two conditions that are supposed to be met. One) a sharp fall Two) no movement post the sharp fall for 1 minute. THEN the call sequence should start. Armchair diagnosis is the accelerometer is bad. I have a 4 with detection enabled and not had it start up in a week. Thankfully I am not on crutches.
Thanks for your reply. They're actually are 3 separate conditions that are to be met before the call for help goes out. The first is your arms both going forward as to cushion your fall, or if you were falling backwards both of your arms going over your head. That triggers the first part. The 2nd condition that has to be met is the accelerometer detecting a hard landing. Then the alert goes off. And if no movement is detected within 60 seconds, then the 3rd criteria is met and the call for help goes out. I can see where the crutch movement could trigger the first condition, although the movement of my arms is only 9 inches per step but they are in unison. But there is definitely no hard landing. After a hip replacement, trust me, you don't want hard landings!
The one time where the watch actually called for help is when Siri heard me telling a friend about my new Apple watch. I caught that one with 3 seconds to go before the call was set to go. I was explaining to him how the Fall Detection works and Siri interpreted that I was asking for help to be called. I solved that one my turning off the auto listening function of Siri. Such are the dangers of auto listening taking actions on your behalf.
In the end it was the calls not successfully being answered and going into call failure mode that was the deal killer. Apple Engineers detected something in the diagnostics that would take a bug fix to cure.
Thanks for your input...I think you are on the right track.