Write the next sentence in this paragraph:

How to delete cell phone memory
Back up your contacts.
Before wiping your phone, you may want to back up your contacts list. You'll be able to restore this list after you finish the reset procedure.

Choices:
(I). If you're logged into your phone with a google (android) or icloud (iphone) account, the chances are good that all of your contacts are backed up in the cloud already. See back up an android phone on the google cloud for instructions on backing up your android contacts..
(II). If you've previously deleted all of your contacts, you may not want to have this backed up. Just slide the " back up " button to the off position..
(III). This can save any data from your phone that you've erased. To backup this list, open settings, tap privacy, and tap icloud backup backup..
(IV). This will protect your data from degradation and damage. Removing all contacts from the list is an easy way to do this..
(I).