In Indian mobile market Htc has a demand in second hand mobile.In Gujarat Maharast Karnatak has large market in second hand mobile.
Looking= Good and best causes of lots of accessories available for Htc 10
Android = Marshmallow to possible naugat
Other should be detail available in internet.i am not taking
Important
Camera= sensored should be dmaged automatically in lots of htc brand/big problem to capture camera
Hear= lots of heat to use
Price= of vourse you should be got price in second hand
Ex.M8 2015= 16000 2016= 10000 Market down