I loved my Lumia 521s... had 4 of 'em between my wife & myself. Fukkin' thing just plain
worked. Every damned thing on the phone worked, and worked
right. There wasn't much of a app store... but you didn't need it cuz they had Nokia Drive 3D GPS and a fully functional Office Suite built in, which was optimized very well for the small screen.
Most importantly, unlike most of what was out there at the time (and arguably, still is), it was a phone
first, not a tiny tablet that happened to have a phone app
as an afterthought.
The 620 they replaced my first one with when I killed it on the job was the polar opposite... 3x more expensive, slow, bad battery life and buggy as hell.
I took it back within the week and got myself a used 521 off fleaBay. Then another when I killed that one.
mnem
*salute*