After having the item for 4 days, I must profess myself quite satisfied so far.I am coming from US Cellular voice-only subscription and couldn''t abide what they wanted to charge for data plans; I just want the ability to make occasional calls and also have moderate access to the internet while travelling, so I don''t need thousands of minutes of voice plus an added $50 or something for data.  This phone and $30/100 min TMobile plan seemed to fit the bill for me at the right price.  I had some apprehension about whether I''d be able to utilize this plan with this phone (didn''t get it at Walmart, etc.) but I had exactly zero issues signing up for this plan online.  It took me about 4 mins between opening the TMobile website and having an active phone in my hand, and I have been happily surfing and downloading ever since.  After reading the various reviews, my other main concern was about battery life.  So far I have experienced about a 30% discharge per day with modest usage (download a few apps, some Pandora, a phone call or two, browse a few web pages), so by that measure a single charge should last me about 3 days or so.  Presumably longer if it was just on standby most of the time.  A friend of mine wth an iPhone says he has to recharge his about every three days so my experience seems typical, and quite satisfactory to me.  I am careful to turn off the GPS and the BlueTooth unless I''m specifically using them, but otherwise I don''t feel like I have to be constantly watching the battery and husbanding my usage for fear of running out.  I just sequestered all the bloatware on the home pages in a folder and haven''t felt the need to try rooting the thing to get rid of this stuff, as it doesn''t seem to be shortening the battery life or anything.I have experienced a noticeable reduction in voice quality with this phone/plan vs. what I had with USCellular, but I don''t know if it''s just differences in coverage or what.  The voice quality is acceptable, not great, which is why I''m not giving 5 stars.  Other than that, I find this a most excellent combination of smartphone and data plan, although never having been a smartphone user before now, I may be easiliy impressed.