Hi guys. Need ya' all recommendation on getting my very first smartphone
Was surveying through the net but ended up in confusion LOL

Usage: Most probably for viewing documents/ebooks (mostly pdf, ppt, docs files etc), so do I enjoy listening to songs, videos, taking pictures, social webs, not that obsessed with gaming/apps though.
Budget: Below 1K.
OS: Android or WP8
Brand: Any brand is okay for me, as long as it fits the above requirements.


PS. Actually I have my eyes on Lumia 620, any comments on it (read that it has some probs with PDFs?) and does its actual performance fit my need as mentioned? Kindly suggest. & Thanks in advance!