Pretty basic smartphone knowledge you got there, don't even recommend an A3 to this kid, or a nokia, while the A3 is basically a model samsung released just for sales, its as low end as a midrange phone can get, for an absurdly bloated price for it's specs... Also, regarding the so called moral issues, it's just common sense knowing that electronic parts from any device / equipment are being made in countries where child labor and sweatshops thrive... Just don't buy a phone then lol? What you can do, is go with the OnePlus2 and save some money for pmw, or just go with OnePlus3 while you are at it, it beats almost any flagship released nowadays, and it has a very robust and clean design, just take care of it, dont wanna drop that face down do you
Also, dont give an f about the phone's brand. OnePlus is just making it's way up there slowly but surely. Some other phones i have heard in this thread are laughable, like the blackberry passport, failed concept in my honest opinion, good to look fancy with it, but hey, not good of a phone at all, holding it would be a pain aswell.
If you prefer stock android though, go with google nexus 5X, it's very cheap, although not the best multitasker, or go with an LG G5, running with the same cpu and gpu as the oneplus3 , hope I helped
