1. First of all, the mobile phone and the software do not match. The mobile phone system version is too low, the mobile phone has insufficient memory, or the hardware that the software needs to support does not support it. These situations will cause errors in installing the parsing package. The solution can be to check whether the mobile phone system is the latest version, check the official website of the corresponding software APP, whether there are requirements for the mobile phone system, and understand whether the hardware specifications for software installation are met.

2. Secondly, the downloaded software is incomplete. Mobile phone downloads can be from the app store or third-party installation packages. There may be cases where the installation package itself is not complete enough. Delete the installation package and then download it again, or directly find the official website to download.

3. The name of the final installation package is incorrect, or there are problems with the path, etc. For some older mobile phones or software, installation package errors may occur because the device does not support Chinese names or paths, or long file names. At this time, the solution is to rename the file. In most cases, the name only contains English letters. If there are Chinese characters in the file name, it can be renamed "abc.apk", etc. After the change is completed, run the installation program again. Adding 9pro system file exception will solve it.