How to deal with touch offset on lumia 630 with virtual control

When i export a windows phone 8 project and install on my lumia 630 device ,then luanched this game i had found my touch has offset but not happend on lumia 520 device.
Because Lumia 630 has a virtual control ,perhaps this is the source reason about this problem.
But how can i deal with this?
Tks.

You mean you touch one area on screen, but the actual coordinates your game gets are different?
In such case it’s a bug and should be reported.