There could be any number of reasons why your iPhone isn’t backing up to iTunes. Let’s take a look at a few possible solutions.
First, make sure that you’re using the latest version of iTunes. If you’re not, download and install the latest version.
If you’re using a Windows computer, make sure that you have the latest version of the Microsoft .NET Framework installed.
If you’re using a Mac, make sure that you have the latest version of the Apple …