Hello! I'm glad to answer your question. 1, the software data package has not been downloaded completely due to network reasons;

We can try to download the installation package again (this problem often happens to Android phone users)

2. The downloaded version of WeChat software does not match the mobile phone system.

This problem often happens to Android phone users, and Apple phones will not have this problem.

3. Unknown software installation failed.

This problem is also for Android users. We need to set permissions to set installation permissions.

4. The mobile phone is out of memory.

This problem may occur in any mobile phone, and the solution to the memory shortage is to release the memory space of the mobile phone (by deleting some useless third-party programs).

5. Error parsing installation file.

The error in parsing the installation file is mainly due to the fact that the system does not support the software installation file. For example, if you are an ios system, you install apk files, you are an android system, and you install ipa format, so you can't install it.