Need help with iCloud
I have an 8 GB iPhone 5c. I completely shattered my screen and the LED on the screen is totaled, so I cannot unlock it or even swipe to unlock. I do have my iCloud sharing enabled, however I only have a certain amount of storage that regularly backs up my photos. In order to get a new phone, I need to disable my current one but I do not want to lose all of the pictures that were not backed up with the iCloud. I am asking if anyone knows a way to transfer all of my photos onto my computer even though I don't have access to my phone? Or if it's possible to purchase more storage and if it would just automatically back up more photos if I increase the storage space?
iPhone 5c, iOS 8.1.3