Is there some kind of cache on my phone (Motorola V551) that I have to clean out from time to time to get free space? I ask this because I was on a binge of sending a bunch of pictures/videos I had on my phone to my e-mail address. When I started I had about 84% space used, and after I was done, I went to take a new picture and it told me I had 99% space used, and I didn't take any new pictures/videos in-between.