What to do when Xiaomi Redmi 4X gets locked?

I bought new Redmi 4x after sim setup i reboot phone and it just locked now. I'm poor and i collected money for that phone. I'm waiting to unlock it... Help me

Hi WaseemRaza. Didn't you setup a lock when you started the phone? Cause it won't just lock like that unless you set it up. Also, is the phone brand new when you bought it?

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