I'm using it since one and half year, it's the best phone ever I used till date with amazing features and performance.
Ram - 1.5gb
Processor - 1.3 GHz, quad core
Operating system - kit Kat upgradable to lollipop
Rear camera - 13 mp
Front camera - 5mp
Internal memory - 8gb
Battery - 2600mah
It's best ever phone by htc.i really love using it.it's a great phone it doesn't hang.works perfectly with good quality hd camera, it's battery duration is good, battery lasts for good time, smooth to use with perfect look.