How come when the mobile card I just bought two days ago was turned on, I found that someone used him to make a phone call and sent seven short messages?

First of all, explain that your mobile phone has opened the call reminder service. Second, this mobile phone number has been used by others before. Maybe you will ask why you used a new mobile phone card before. In fact, it is a problem of mobile phone recycling. The mobile phone card will be recycled after 3 months of downtime, and then it will become a new mobile phone card for sale. It is for this reason that others don't know that this number has been reimbursed and think that this number is used by "his" friend.