Is There any profession forum about mobiles?

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There're always irresponsible people on the internet, when you ask a question, they would give you an answer that they don't even know if it's correct. So I think a profession forum's a good place to go. Have you got any profession one about mobiles? Including mobile technology, mobiles news ect. I need one Thanks for your share. I would really appreciate it. )) BTW, Mylot's a good place, I've received many helps here. Thanks all.