I have purchased htc desire 820 with dual sim in last year. This is a very good product and it is a some expensive but overall its working very well. This mobile is not hanging and nor stopping in calling. I have used so well and I am so happy with this product. This is a good high speed mobile. Video also running good and there are looking good hd quality in this mobile.
Sound so well during calling and also hearing video and mp3 songs. This is a very good height for keeping in the pocket. When I started the internet, running go very well not go slowly. This mobile support maximum apps and I play so well high quality game also.