I'm actually more impressed with the photos from the 19 (actual) MP Lumia 1520 than I was with the earlier 38 MP Lumia 1020 camera. The colours are truer & the device's faster quad-core processor reduced the time between shots considerably, compared to the older, slower dual-core setup in the 1020.
Lumia 1520 battery saver test terminated after 4 days, 9 hours, with 20% charge remaining. So it's not unreasonable to expect five to six days from a full charge when battery saver is on. for at least three hours yesterday the device was used a a camera, viewing & editing photos, as well as uploading them to OneDrive when a wifi network became available.
I had to connect the thing via a USB cable to get the pics off it, I could have downloaded them from OneDrive but that's a waste of bandwidth/time.
Got out & about yesterday with the Lumia 1520 as a camera, photographing sheds, as is my wont.
Here they are: https://www.flickr.com/photos/_windrider/shares/pos3f6
I have just configured my iPod Touch to act as a home phone handset for both incoming & outgoing voice calls. I just have to be within wifi range of my router/modem. The specific app from the carrier has to be installed & open, though.
TIL the Lumia 1520 (6" screen) has a one-handed mode: tap & hold the home button @ the top half of the screen goes dark, leaving all the action happening within reach of most thumbs.