my partner has the 820, i had the 900.
So in comparison to them both, the obvious thing is the camera is the best out of all 3 easily.
Screen wise:
The lumia 1020 has a smoother experience scrolling, easier on the eyes, feels less harsh to look at and the higher dpi does improve the screen in terms of sharper lines.
The lumia 900 cant beat it at all (sorry! 😞 )
The lumia 820 is less sharp than the 1020, but whites do seem whiter and brighter on the lumia 820, while the 1020 are more warmer and slightly tinged with yellow in comparison. This may be to do with the lumia 820 being 'over white' as when i just look at the 1020 in normal use, the whites look white.
Build:
Lumia 1020: it was lighter than i was expecting as being used to the 900 which weighed the same roughly (go figure!) but being larger i guess spreads the weight out.
The camera is the thing you have to get used to as the rest of the phone is very familiar to anybody using previous lumia's so while holiding the phone, i have a finger over the "NO" part of nokia on the camera hump. This is wierd at first but i have got used to it.(if using the wireless charging case, you notice it less due to less difference between camera and back plate)
Buttons are nice to press, have a solid feel to them. Havnt used speakers or head phones so cant comment on them.
Casing:
Lumia 900: comfortable weight to it, felt solid, finished well, but wasnt anything....special
Lumia 820: The removable cases (as rest is pretty much screen) had a more premium feel than the 900 and felt softer while not losing the reobustness feel of the 900
Lumia 1020: by far the nicest phone texture of the 3, feels soft to touch, almost like a rubberised plastic, hard to explain . feels solid, but i dnt feel it 'feels' as solid as the other 2, but they may just be me as it is new and precious!
The glass on the front:
The lumai 900 was flat with a slight ridge going from glass to the polycarbonate, whih was fine, but wasnt the nicest to run yor finger over
The lumia 820, even with its flat screen and changeable covers managed to make the change from screen to case much nicer smoother and softer
The lumia 1020 nicest of them all, much like the 820, but has a slight curver to the edge of the glass which feels great and looks awesome when looking at it.
Apps
Lumia 900: windows 7.8 so was coming to its ends, worked but wasnt the greatest for support so will leave it there
Lumia 820 and 1020 both windows 8 with amber update from nokia. not sure if the pro cam stuff is available on the 820 has havent checked and as both are windows 8 , they have same apps. Ability to control colour warmness and saturation is cool, but still couldnt get the lumia 1020 looking as white as the 820.
Battery life seems good on the 1020, as always with a new thing, you play with it a lot at the beginning but still easily lasts me a day with small amount of gaming and general browsing of the phone, small amount of picture taking too.
Thats my thoughts so far:)
