Share your experience!
Great to hear that, keep us updated
That is good news, I hope it all works out for the future 
Hi violachristina,
Have you attempted a software repair on the device?
Here's how to run the repair on PC Companion:
1. Install and open PC Companion then select Support Zone.
2. Phone Software Update.
3. Start.
4. Repair Phone
5. Continue
6. Accept data removal
7. Next
8. Wait for prepare
9. Select Phone
10. Follow the connection steps
And Bridge for Mac:
1. Launch Bridge for MAC without the handset connected.
2. On the Main Window select "Xperia > Repair Xperia Device".
3. Ensure the phone is charged and select "Ok" in the following window.
4. Select Continue on the following page.
5. Wait until the initialising step is finished the continue as below.
6 . Select your model of phone from the list that appears
7. Follow the connection steps that appear, ensuring that you are holding the relevant button down before during and after the connection phase until the update/repair begins.
Hi MurrayG,
Welcome to the community, did you give any of the suggestions in this thread a go?
I have done all except for the software update - which I am trying as we speak.
I'll let you know how it goes.
Take care.
Sure thing, how did the update go MurrayG?
Actually, my pronouncement was premature... although the repair does seem to have improved the battery life quite a bit, so still reccomended!
It seems like the issue crops up most often, or maybe exclusively, while I'm walking. I've turned off auto-rotate, but it'll take some time before I can be sure that's the culprit.