One plus 3t is slightly upgraded version of one plus 3. The only thing changed here is front camera, processor and storage availability. Coming to the camera, the front facing camera is very much improved from one plus 3 in terms of color reproduction and details capturing. One plus 3t comes with snapdragon 821 processor which is slightly upgraded version of snapdragon 820 processor present in one plus 3 and delivers slightly upgraded performance. Now the one plus 3t is available in all new color and storage options and if you are searching for flagship, then this phone is for you.