In case, you have already been using OneDrive to save a backup of your camera roll photos, then you don’t need to do anything and you will now see 30 GB free storage in your OneDrive account. Microsoft has now upped the free OneDrive storage to 30 GB, in case you chose to back-up your camera-roll.
This holds true for both Windows Phone and Nokia X range of devices. I have just checked it on my Nokia X2 review unit and I can see 30 GB storage for my newly created Microsoft account.
For those who are new to OneDrive,
If you are using Windows Phone, just allow auto-upload of photos from the Settings—> Backup
If you are using Nokia X, Nokia XL, Nokia X2, then go to OneDrive—–> Settings——->Camera Backup and Toggle camera backup on