Keep in mind that my Nikon really only consumes power when it's _doing_ something. I can leave my camera "on" for months at a time and come back to a fully char

Keep in mind that my Nikon really only consumes power when it's _doing_ something. I can leave my camera "on" for months at a time and come back to a fully charged battery. The screen is off except when I'm previewing a photo. The viewfinder is physical. The metering is only on for 10-20 seconds after I wake the camera by touching the shutter release and is only displaying on a low power monochromatic LCD. Autofocus only happens while I'm holding the shutter release until it finds focus then locks. Meanwhile the iPhone battery is powering what is, effectively, an entire laptop with a 5+" screen and cellular, wifi and bluetooth radios. Articles I can find are quoting an iPhone taking a few hundred shots on a charge. Nikon's testing puts my camera able to take a few _thousand_ per charge. There's literally an order of magnitude difference from my Nikon's 1400mAh battery to a iPhone's 2500-4500mAh battery. Two to three times the capacity for 1/10 the pictures.