The whole mobile network thing is very annoying. Plus my z3 phone just recently had the front screen crushed, repair is 180 euro as the Z3 screen is made up of nearly half the phone ( if you dont believe me look it up). So I guess that instead of repairing, I will buy an alternative brand.
I am happy with my Z2 tablet, but that is because it is a tablet! And dont use it for important things. I hate to say it but I think its time Sony throws in the hat. They have the PS3 and the camera sensors, unless they can devote some time to 1 smartphone product a year, and 1 tablet a year then they are trying too hard in the mobile division (no pun intended )