Why do I have many banks on my mobile phone every day, so I don't have to spend money to send messages to me?

Maybe it was left by the previous owner of this number.

How many banks spend money to send messages on their mobile phones every day? It is estimated that your mobile phone number was used by someone else before, and then it was cancelled. Buy it now and then use it. All the information will be sent to your mobile phone. You can bind your mobile phone number to your account.