ECG works for me fine. I don't like to install unofficial software but thanks for the suggestion.I can't find temp either. BP & ECG are there for me. As I said in another post, the modded Samsung Health Monitor app needs to be installed (from a downloaded apk file) on the watch, if you do not have a Samsung phone. Then you'll have 2 Samsung Health monitor apps on your watch., but only the modded one will be "active". I can't say what the process is like when paired to a Samsung phone as I've only used my GW5 with a Google phone.
BP is a separate sensor and that does take 'spot check' readings. HOWEVER, this has not been approved (3 years in) by the FDA yet, so it cannot be used without installing modified software in the US.The one I'd really like access to is blood pressure but if it only detects up and down without unit it would be of no value to me.
That said if it were possible to detect a fever, that would have been useful.