So I've got my new device, and I'm so glad to be rid of my SP, I bought it around April 2014 for £250 and at the time, it sounded like a decent performer on paper. Then we got our first update, pretty buggy, then we got the news of the 4.4 update being cancelled. Then FXP moved us to a legacy device. Today, I sold my device for a measly £25 at cash converters after CeX said my loud speaker was too distorted and couldn't be accepted.
I still to this day don't understand why the phones memory management was so horrible. 1gb should be enough to get by, all I got was crashes, even on the lock screen and system ui.
I hope people who still have the SP can move on from what has been a massive let down for me. Anyone looking to pick one up for cheap, avoid it unless the disco lights draw you in like they did to me.