Hi, I still using a iPhone 5 and I did not buy the 5S, as I wanted to wait for the bigger screen and now there is 2 nice options.
Im thinking to go for iPhone 6+, but I dont find any definitive guide, how actually the HEALTH app works or wht do we need to know about it.
How will it track the steps or sleep activity when the phone is away from you ?
In both the iPhone 6 and 6+, their is a motion co-processor called the M8. This is the successor to the M7 which was in the 5s.
This chip records motion data, such as steps taken, flights of stairs climbed, etc.
The Health app is a portal for viewing information. There are many dashboards you can enable that will show you information on specific areas of your health, such as steps taken, flights climbed, calories eaten etc.
Some of these dashboards, such as Steps, Distance, Flights Climbed, do not require any outside data from 3rd party apps/devices as the M8 chip logs this data. Other bits of data, such as calories eaten, food nutritional info, sleep analysis, etc., can be pulled into the Health app from 3rd party apps once they are updated to integrate this data.
For the other user posting about differences between FitBit and Health, are you using a FitBit band, or solely the app drawing on data from your phone?