Oneplus 3T is an upgrade version of onepluse 3 which is very popular device oneplus is also know as the flagship killer in low cost price like it has more battery 3400 mah old version has just 3000 mah and Power full processer Snapdragon 821 chipset old version has Snapdragon 820 chipset processer.Design has changed little bit in the back all other features are identical to each other
Very good phone but still marshmallow updating soon I guess to nougat 7.0
Price is 29999 which is good for the feature