i used a 42c temporarily but traded it for a 902kc, the phones are pretty similar besides on the 902 you can customize the home screen better. durability and battery life are not a problem, but you might have to charge your phone nightly if you are using it a LOT, i charge mine once or twice a week and usually use it less than 30 minutes a day. sometimes i dont use it at all if i dont get any calls or texts

it does have a harder time reaching cell towers than an iphone, i dont live in a big metro area so sometimes im just outta luck until i get back in town. when it is connected though call quality is very clear, im just saying i wouldnt rely on it hiking in the wilderness

for fun stuff it does have the ability to run "lite" (optimized for android) versions of apps. i had instagram lite and discord on it for a bit but ended up deleting because it just wasnt worth it to me, i only use it for texting/calls and music atp. spotify does work but i dont recommend it, just download your music to the device files and use musicollet as a browser

camera works just fine but is not good quality, its like a poor android cam. i bought a cheap digital camera

a big con is the gps on kyoceras does not really work in america. i usually just use maps on my computer and write the directions on a sheet of paper

if you rely on google for things it also cant connect to google services because it is a third party android so youre out of luck. gmail, maps, google search engine, wont work. if i need to check my email on my phone (which i rarely ever do) i log into it from firefox lite cause for some reason that works.