My mobile phone number starts with 159. Why is there a SMS reminder of 10658 139?

10658 139 is the short message port sent by China Mobile 139. You use the mobile phone number of China Mobile, so the free version of 139 mailbox is opened by default, so you may receive a short message from this mailbox, which may be a short message reminder of the arrival of the mail. What kind of SMS reminder did you receive? For messages that are not sure whether they are true or false, it is suggested that you go directly to mail. 10086.cn, log in to the mailbox with your mobile phone number and SMS verification code to check the relevant contents, or call local 10086 for consultation before doing other operations to ensure information security.