Take Apple 1 1 version of iOS 13 as an example. The steps to download and install the software of Apple 1 1 are as follows:

1, log in to the APP Store account first;

2. Find the APP Store software on the mobile phone desktop, click Enter, find the search bar, and enter the software to download;

3. Press the lock key on the side of the phone twice to install;

4. Finally, wait for the installation to complete.