I had htc desire x its performance and sound quality is best and very nice and very good never hangs too its best mobile I used .It was announced in 2012 august got released on 2012 October it has single sim and its sim type is dual or dual sim dual stand by its display type is super lcd capacitive touch screen 16m colours. Size 4.0 inches .Its multitouch too.Its anroid is os v4.0 ( ice cream sandwich) it can be upgradeable to v4.11 ( jelly bean) .Its cpu is dual core 1.0 ghz cortex a5 and gpu is adreno 203 .Htc desire x internal memory is 4gb and ram is 768 mb .Card slot can be expandable upto 32 gb Its primary camera is 5mp .Its battery is removable its 1650 mah battery.Guys it doesnt have secondary camera I like htc desire x its good .Thanks for reading my review : )