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2016-06-12 08:26 PM
I had the same problem. It turns out that the info screen on the phone does not give you the last digit. Look at your box. That will have the full IMEI. If yours was like mine, and maybe this was a coincidence, the missing number was a five. I have two new Z3+ and both of them had the missing last number, which was a 5, printed on the label on the box. Very strange. Once I found that out, the phones registered with Sony just fine.
2016-07-05 03:50 PM - edited 2016-07-05 03:50 PM
i had the same broblem
to solve it i had sign out from my accunt
and register a new one with xperia accunt not with facebook or G+
2016-11-16 11:27 PM
2016-12-27 04:33 PM