My wife is using an Evo 4g. I used to use this phone, never had any problems. In the last couple months in two incidents about 5 weeks apart, she has taken images that looked fine pulling the image back up minutes later. However, later in the day some of the images would become corrupted, with about half of the image being distorted and the other half appearing normal. I am thinking that this may be a external storage issue, but I was interested in getting some opinions of the community before I started blaming the phone. Any ideas?