I received a Samsung Galaxy 3 tab for Christmas and it has been working great until this afternoon when I was playing a game and couldn't connect to facebook. I tried clicking on my facebook app and was able to go to the site. So I thought if I deleted the facebook app and download it again than maybe it would work right but now when I try to download something from the app store it says network unavailable but I am connected to the internet. I have no clue how to fix this problem. Please help if you can. Thank you.