1, the storage space of the mobile phone is full. Clean up the phone memory, delete the software that is not commonly used, and then try the installation again. It is recommended to bind the APPLE ID on the mobile phone synchronous push for the following reasons. It is impossible to install through some third-party software downloads. If there are problems such as incomplete or inconsistent signatures in the soft installation package downloaded from the third-party application store, you can try to install it after synchronously pushing and downloading.
2. The storage space of mobile phone is full. Clear the memory of the mobile phone, delete the software that is not commonly used and try to install again.