My watch is paired with an iPhone 5S. When I paired the two about 10:30 this morning, the watch was at 100% charge and the iPhone was at about 80%. Then about 6:00 this evening, the iPhone charge was down to 21%, while the watch was 61%. I'm pleased that the watch is still at a decent level, but my iPhone never gets this low, even by 11 PM. Is anyone else noticing a drain on the iPhone battery since pairing?