Truly very able and useful, including... ... the Mona Lisa button for autofocus. You just have to be not so close that there wouldn't be enough fine detail for it to work with. Just back away a little if so, and tap the button again. Voilà. Truly what you need for even mildly mature eyes, and very much appreciated. On latest Amazon bargain Moto g4 Play, fine.
Used to work great on my Nexus 6, but recently the Mona Lisa focus function has been fairly useless, won't focus right. Might be related to phone's Marshmallow upgrade. Also hangs on screen off - screen on sequence.
Works well Magnifies, illuminates and focuses like you'd expect. Simple to use. Haven't tried camera function. ADs are so far unobtrusive. If price were right, might be worth paying to remove ADs.
Big view Make things easier to see.
Good Great easy