The HTC One M9 Review: Part 1
 

For the most part, HTC’s story in the recent past has been well-understood. Starting with the G1, HTC was the first to adopt Android, with massive success as others lagged behind. However, around the time of the Sensation, we saw HTC’s fortunes peak and begin to fall. With the strength of Samsung’s success, HTC crumbled under competitive pressure as their product line became increasingly fragmented, with no real direction. HTC reacted with the One line of phones, but the One X was hurt by the use of Tegra 3 over Snapdragon S4 for most variants, the flexible back cover could easily damage antenna connectors and ruin reception, and in general the One X wasn’t really well-differentiated.

http://www.anandtech.com/show/9102/t...-review-part-1