Trying to work in an open office is like trying to write music in a bus station.
...a $350 Android phone is a high-end device--or, at best, at the upper end of mid-range. Roughly 60% of Android phones retail for $200 or less. (http://www.idc.com/getdoc.jsp?containerId=prUS25037214). The $350 price point lands right near the top quintile of all Android phones. By contrast, there does not exist a low-end iPhone for sale at retail. That's a conscious decision on Apple's part, and matches their overall M.O.
Your phone is not one of the low-end phones that give such a bad user experience. Your phone is quite nice--and quite expensive--compared to the fleet of Android devices as a whole.
Work is the crab grass in the lawn of life. -- Schulz