Hello! I would like to ask: How can I completely uninstall the pre-installed application (Travel to Ali) on EYU’s mobile phone?

You need to go to pp assistant to download Uninstall Master. In Uninstall Master, you can uninstall all the software on the phone, including all the apps that come with the phone (warning that some of the apps that come with the phone cannot be deleted, which will cause the phone to not work properly). The red ones that have been classified for you are best not to delete, and the green ones can be deleted, but deleting apps that come with the phone requires higher requirements and requires ROOT permissions