Authentication code

You need that code. Why can't you receive the SMS? Is your number correct on your FB settings? If you could bypass this anyone could hack your account, which I am sure you don't want!

yes my number is correct but this problem started when I reset my phone so when I log in , authentication code is required ,since fb tell me that I haven't log in to this phone before , telling me the have set me a code , which I have Never seen since my account started behaving, but I can gauze that's I tend to turn off fb notification by SMS before, that's all can tell , please help.