We want to be sure to provide you with the information you need behomes. Let's work towards a resolution. What model phone are you using? What information are you trying to back up?
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What are you looking to back up (photos, music, contacts or documents)?
If you have One Drive, you can back all of those up. I think that you can also back up to Verizon's cloud service. (I currently own a Samsung Galaxy S4 as opposed to a WM device).
I prefer using VZCloud VS any other cloud service including iCloud and OneDrive. My reasoning is, if I ever get a non-windows device it wont be as easy to restore my information (I have a Samsung Galaxy S7 Edge).
You can download the VZCloud from the Store, or it may already be on your phone in the Verizon Folder. Double check and ensure its not there then download from the store.
You can check this article out here for more information on how to configure the Cloud, or just respond to this post and I'll walk you through it.