An application with conflicting signatures means that the signature information of the old version of the software is inconsistent with the new version. You can uninstall the software and install a new version.

Or the installation package is damaged during the download process, such as insufficient memory storage in the mobile phone. The signing tool is a command tool used to digitally sign a file and verify the signature in the file or timestamp file. The ndroid system requires all programs to be digitally signed before installation. If there is no available digital signature, neither the simulator nor the real mobile phone is allowed to install and run this program.

Therefore, before running the debugging program on the device or simulator, you should set the digital signature for the application.