I am unable to open facebook mobile on samsung ace, what should I do?

Oh!! you got trapped with the same kind of problem in which I was a week ago. I also downloaded an app in my Samsung galaxy tab mobile as my friend was saying that if you use facing app in your mobile then it gives a really good internet speed to you. The downloading went really good but after installation i could not find the app anywhere in Gallery or download section. Then I consulted to my friend and he said that i should better check in games sections. He was right as the facebook app after the downloading, got saved in games sections. So you must check in there I am sure you will be able to find it and the experience with the app is really great. It speed up my internet speed to a higher level and I don't have to bother about bulky and slow internet connections. Thanks and have fun time!!