Xcode don't debug after successfully run on real device

Hi all,

I managed to run the code on the xcode and do the debugging when i used the simulator.

https://imgur.com/9cN4XGJ

However, when i succesfully run the code on the real device, suddenly i cant do the debugging on the Xcode. all my log and breakpoint is seem not works.

https://imgur.com/cJ1gHVW

Appreciate if anyone can help me with this issues. Im using Xcode 9.3.

Thank you for your assistance in advance. 🙂