There is a signature conflict when installing qq on vivo mobile phone, but the old version has been uninstalled and no residue can be found. As shown in the figure, if you click Continue, you will fall into a positive situation. If the prompt "signature conflict, inconsistent with the signature of the old version" appears when installing the software, it may be that the software is not completely uninstalled. It is recommended to restart the mobile phone after cleaning up the garbage through I housekeeper scanning. If the program comes with a mobile phone third-party application, you can find the software in Settings-General/More Settings-Applications-Factory Application Management, and click Install to try it out.