I have a Samsung Galaxy S. Whenever I try to access my photos on the android gallery it does not open and comes up with the message 'Not enough memory. Delete some items.' I do have enough memory and I can still access my photos through going into the camera app and going back through them all. The gallery used to open occasionally after I tapped on the app a few times but this has stopped. It's been going on for ages so I have turned it off and on lots of times/ taken out the battery etc. It may have possibly started when I bought an sd card. What do you think the problem is and what can I do about it? If I was to restore it to factory settings would this delete all my apps and photos etc? Thank you.