On my 1520 running 8.1 Update + Denim...
I shoot 5MP jpg + 16MP dng (what can I say, I'm a 16:9 kind of guy).
The 5MP is great for sharing out and it is oversampled so quality is high compared to a regular 5MP shooter. I believe 950/XL ups this to 8MP? Nice bonus. And that size is more convenient for sharing, especially straight from the phone where most share methods will compress the photo anyway.
Plug into USB and get your .dng files if you want to save them. I go through and purge from my phone every so often as the files that accumulate will eat up a lot of storage pretty fast. Save what you want to PC and unclog your card. You have lots of options for raw/dng editing on desktop and a search will reveal them.
Put
Rawer on your phone and edit the .dng files right on your device and save them as .jpg in high quality and resolution.
If you shoot jpg+dng and use Rich Capture, the bracketed originals are saved as dng files and you have a choice of the original or the +ev or -ev. Neat trick that, IMHO. Here is one I shot in Rich Capture recently, then opened the +0.5ev dng in Rawer and tweaked just a bit. Result is 5376x3024 or 16.3MP at a 5.27MB file size. Just a couple small tweaks made it much better than the "original" to my eye.
http://1drv.ms/1VBYFuW
Here's a thing about .dng, it is lossless. With .jpg, every time you open it to view or manipulate it it degrades slightly. Over time this can add up. With .dng (and .raw) the file never degrades and is fresh every time you view or manipulate it. You can "print" .jpg from it over and over in the same or different edits and maintain quality on each "print."