One plus all mobile is very good .but one plus 3T is best smartphone because he put on the one plus company is world third best mobile manufacturing company.
One plus 3T is 5.5 super screen and very tough screen.
One plus3T is prosser is snapdragon 831 is best and latest snapdragon prosser and 6gb ram
One plus 3T is marshmallows android system and upgrade to to upcoming 7.01nought.
One plus3T camera is very good photography in full light and low light.
If you buy a super smartphone you go with one plus3t.