I got my Xperia Tablet Z yesterday. It was a wifi + 4G 16GB model. However, it is sim locked to O2 networks, going to see if I can got an unlock code from O2..
I did not receive any text or email from O2 until couple days ago telling me the tablet will be shipped and delivered to me tomorrow.
P.S. The delivery guy forced the box through my letter box, so it looks like been chewed by dogs when I got home, luckly the tablet seems undamaged inside.
Current mobile devices: Nexus 4; OnePlus One; Lumia 930