I'm thinking about possibly getting this phone. Currently, I use a BlackBerry Bold 9780. I don't have a data package on my phone, I basically only use it for calls and SMS. If I must use the Internet, I use Wi-Fi. Anyway, how is the Z3 Compact? I despise massive phones and this seems to be what is called "small" nowadays. Don't really want an iPhone. Is the Z3 Compact powerful enough for a very smooth and responsive experience? How is Sony's own UI "overlay" over the stock Android UI? Is Sony good/quick with Android updates? Any other phones I should consider or look at? By the way, if I am not wrong, the Z3 Compact was released not too long ago. However, any guess on when (and if) there will be a Z4 Compact?