@Charley95 wrote:Sony expiria xa ..... Strava app won't work ...... Still works on my old Sony z ..... On the xa ....It will not trak ..... In 3.8 miles it said I did 150mph ....Been to shop and no help .....Can someone please help
Strava is Strava Inc. product. I'm totally sure that Sony didn't created this app. So all representations must be for this company. One of reason can be incompatibility with your model, operating system and ect. If this app worked in Sony Xperia Z model, it can not work with you model which you have now. Even then these models is different with theirs specs, operating systems and ect. All information for you, i think, must give app's creator , help too 
All contacts of creator you will find in Google Play page of this app and Strava official page
I don't think you are in right place to get help... Sony is not related whit this app at all
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