Unite 2
This phone was released on May 8, 2014 with specifications-
1GB RAM, 4.7 inches screen, Primary-5 MP, autofocus, LED flash, 2 MP front camera.
This phone was a great hit as the 1GB RAM was a thing at that time!
Its main problem is its play store problem!
whenever you go for downloading apps, it says storage problem.
About 60% of people who bought this had the same problem.
It was released with kitkat 4.4 but is upgradable to lollipop 5.0.
It now costs about 6K.
I would advice you to buy this phone only because of its durability.