Is there a mobile phone that automatically sends text messages to 139 mailbox?

This is China Mobile's 139 mail bill delivery service.

Without subscription, the system automatically sends the phone bill to the 139 mailbox under the user's mobile phone number every month, so that you can easily understand the consumption of mobile phones, which is completely free and environmentally friendly, and parents can use it with confidence. If you don't feel at ease, you can also open the website mail. 10086.cn on your computer or mobile phone and enter your account number and password (the account number is your mobile phone number, you can log in by SMS for the first time, and China mobile users have opened the free version of 139 by default), and then enter "service mail-mobile phone bill" in the inbox to view the details of the bill.