Hi!
- TLDR: have a look here , third from the bottom.
So, I happen to “snoop” here every other day just hoping I can start putting my Xperia III to some use, and I saw your post, and it piqued my interest.
I understand you are having issues because of this , and more specifically because of this, right? I hope the link provided above can lead you to some helpful solutions.
[In fact, I have not understood if you already have the phone or not; were that the case, and were you successful in using your phone, may I suggest you to make an independent post about it, in order to provide a solution to others?]
Ciao!