2. When downloading mobile phone software, sometimes the software download is incomplete, which will lead to errors during installation. At this time, just delete the incomplete software and download a complete software to continue the installation.
3. When the certificate of downloading software expires, the software cannot be installed. At this time, you can adjust the time and date of the mobile phone to the time before the expiration of the software certificate, as far as possible a few months in advance, so that you can reinstall the software and then adjust the time of the mobile phone back after the software is installed.
4. When the memory of the mobile phone or mobile phone memory card is full, the mobile phone will not be able to install the software. At this time, you can clear some junk files or unused software from your mobile phone and memory card, and then install the software.
5. When installing mobile phone software, if there is an old version of this software in the mobile phone, it is a software installation error. At this time, it is no problem to uninstall the old version of software and install new software.