I have an 2010 iMac running High Sierra. I have iTunes version 12.8.2.3 and iOS version 12.3.1. I want to backup my iPhone to my computer using iTunes.
In the past I could connect my iPhone to my computer and when I started iTunes the iPhone icon would appear on the left side on the iTunes screen. I would select the iPhone and then back it up to either my computer or to iCloud.
Now, however, the iPhone does not appear in iTunes. How do I backup my iPhone to my computer?
Best Answer
First try a soft reset on the iPhone.
Source: Restart your iPhone, iPad, or iPod touch
Note that restarting the computer may also be necessary if the soft reset doesn't fix the issue.
If a soft reset and restarting the computer doesn't fix it, then you may have to do a hard reset on the device. If so, have a look at: How to erase your iPhone, iPad, or iPod touch