I have an iPhone that has accumulated almost 5 GB of "Documents & Data". I only use my phone for the basics (phone, email, text, contacts and calendar), and can't find out what is taking up all that storage. The only possibility I can think of is my emails, which I don't delete because when I delete them from my phone they're deleted from my Gmail server - and I need them for business records. If the email is responsible for the excess storage overload (I'm near my limit), is there a way to get the email off the phone without losing the emails on the Gmail server and Outlook on my computer? If it's relevant, I'm running Windows 10 on my PC laptop.