If you plan to try moving the photos and what not to Google Drive, there's an easier solution. On Android phones, simply use the Google Photos app to do an automatic backup of photos and videos from the phone. The backup can be done with two options. The first option is for unlimited storage. This resizes the photos to a smaller resolution, but provides unlimited storage. Then there's the full quality version. This version will consume the same space that your Google drive account would consume, but it saves a full quality copy of the photo.
The Photos app will complete the photo backup and sync automatically once configured to do so.
One app to keep an eye out for is an app called DT Ignite. It's commonly found on Verizon phones, but appears on phones sold by other carriers as well. This app can silently install apps which are sponsored by the carrier, to the phone. Whether you factory reset the phone or not, it is best to always disable it. To disable, go to Settings > Applications (or Application Manager). Click the menu button then select "Show System Apps". This menu may also be seen on a drop-down above the application list.
