I am 26 and she is 16? we didnt met yet. i dnt know much about her.(mobile conversation only)?

It seems that you are a genuine person.So please keep in mind that at this juncture the girl is legally not mature one.So,better keep yourself away from this girl at least for 2 years.Once she completes her 18 year age then you can talk about marriage plan with her.Before that even to having chat with minor girl may lead you to the severe legal problem.