1) LTE is known to drain the watch's battery. Does this watch only use LTE selectively, i.e. only when it is not connected to the smartphone via Bluetooth or Wi-Fi? 2) My Galaxy Watch (1st generation, so very old) kills the battery of my smartphone. If I look in the battery settings of my smartphone, the Samsung Health app is largely responsible for this. But now the newer Galaxy Watches have Weae OS. My question; does this mean I no longer have to use Samsung Health? Can I configure the watch with the Wear OS app and use it with Google Fit instead of the Galaxy Wear app and Samsung Health? Thank you