1. The user's own mobile phone number is blocked by the operator.
Solution: You need to contact the operator to solve this problem.
2. The mobile phone is in arrears or stopped.
Solution: Check whether the mobile phone is in arrears in time and pay off the phone bill.
3. Blacklist settings, such as SMS security software, set strict interception rules in SMS.
Solution: Check SMS blacklist settings, menu-> Harassment interception-> Settings, respectively, to see whether there is an interception mode and black and white list are not allowed to reach the number of SMS.
4. The privacy settings of the internal browser of the mobile phone, the security level of the browser is too high or the setting of shielding "third-party cookie and website data" is set.
Solution: Reset the security level of the browser or turn off the setting of "blocking third-party cookie" in the browser, and set-> Privacy settings-> Content settings.