Hello,
I am using Sony Xperia M since from august 2014. Xperia M is quiet a good mobile phone. But After one year my mobile makes me frustrated. I changed its charging port two times. Now I am facing another problem that is its back cover. Now my mobile removes its volume botton and camera botton. Anyway I recomended to all that if you want to use Sony Xperia m make sure you use it for small period of time. One more thing its internal memory is just 2 GB so it is very difficult to install new applications and to update.