This is normal. That's because you haven't changed apk. If you change the apk, you will know that the changed apk needs to be signed before installation. If the signature is changed, it will be different from the original software, but the program name is the same, which will prompt a conflict.

Signature conflict is mainly due to the existing files or applications used to install software in the mobile phone, which makes the newly installed software unable to overwrite the original installed software. Usually this kind of conflict can be avoided by cleaning up the storage space of the mobile phone or more files.

Enter the housekeeper and select "mobile phone cleaning" or "space management". Delete cache garbage. Restart the phone before installation. If the signatures still conflict, please open the settings page and select more settings. Select "Application".

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 and storage of the mobile phone.

Maybe the phone memory is full. It is recommended to clean up the mobile phone garbage and leave enough space in the memory. The version of the installed software is lower than the existing version, or it is caused by software compatibility problems. Please change to another version or download and install other software again.