Why does the old man's mobile phone inexplicably show that texting is more than 200 yuan, but I don't send it often?

It may be that the mobile phone card has a package fee deduction.

You can call the mobile company and ask how much the package fee for your mobile phone card is. If you open the bag, you will be deducted every month.

SMS Fee At present, most packages send domestic SMS 0. 1 RMB/message, and receive it for free (excluding Hong Kong, Macao and Taiwan). In view of the differences in business rules and tariffs among provinces, you can call local 10086 for details.