Press the jhome key several times to automatically update the system, in the settings. Update the software of applestore or the mobile phone software download center downloaded by yourself, such as (Quick Use, 9 1 Apple Assistant).
First, open the settings, pull down a little, and find iTunes Store and App Store. Click in and you will find the page as shown in the figure: Next, you just need to close the "Applications", "Updates" and "Use Cellular Mobile Data" in the automatically downloaded project! In this case, the system will not automatically update the software.