China mobile SMS safe deposit box

If I'm talking about the business of saving short messages, I use a card in Ningbo, and its name is short message warehouse. I log on the home page of my mobile phone, and there is a short message warehouse system to save my short messages, the longest is 1 year. For your business, ask customer service to see how long you can keep it. If you can only watch it for a month, there is nothing you can do.