Unable to run app in Android mobile by scanning QR code

Hi,         I have developed simple app on mendix and by using viewapp I selected external mobile (to run app on my mobile) using mendix mobile application I scanned QR code thent it is saying that. No permission to access this app  in your location.
1 answers

You need to be on the same local (wifi) network to be able to use the mendix developer app on your phone