How we got here

My name is... Minako... I got some text I am not aloud to tell anyone but, I think I should tell you this...

808 555 9680
Sent at 3:37
I am here and I will be always here but if you don't get this riddle you will be in a lot of danger Minako.

Do I know you?

You will soon.
Oh and don't think about telling anyone other than your twin sister Ryo or your family will disappear into thin air.
Hope you understand...
Your friend...