One plus one which was the first phone from the one plus company .this phone breaks the records .and made his own image in the phone industry .one plus one was the best phone when it was launched because its price was not so high and gives all the feastures at mid range .
But one plus 2 not sold very much like one plus one
Due to its price because one plus 2 price was 25000 rupees at the time of release.and those who had one plus one phone then it is not usefulness of buying one plus two because the feature wise one plus 2 was not too upgraded then one plus one .
Cons
1) heavy wieght
2) .ips lcd , no amoled.
3) camera is not good at nihht