When I tried to run x86 on my device the following error occurred:
Unable to deploy x86 package to Windows Phone device. Change your build config to ARM or Neutral, or change the debug target to emulator.
Is there a way to run the app on a device without changing the assembly?
The simple answer is no .
Unable to run x86 package on ARM device (it does). You will need to change the target to ARM or Neutral as the error suggests.