I will take a screenshot (Press the power and volume button) and it will say it is saving the screenshot. And it will even give me the option to view it but when I do it says no thumbnail. Plus it isn't saved in the gallery at all. It will take the screenshot but not save it. I have tried rebooting. Rebooting and taking out the battery. Rebooting and taking out the battery and sim card. Deleting hundreds of pictures, nothings working.