What is the reason for the verification code of medical insurance card?

The failure to receive SMS verification code for a long time may be caused by the following reasons: First, the number of times of collection exceeds the limit. Solution: I can only get the verification code 20 times a day. If I exceed the number of times today, please try again tomorrow. Second, the mobile phone business does not support the solution: at present, the number segments of the three major mobile operators in China have been supported. However, the mobile phone numbers in Tibet, Xinjiang, Hong Kong, Macao and Taiwan and overseas will be restricted by mobile phone service operators, so it is impossible to carry out mobile telephone service. I suggest you try to change another mobile phone number. Note: Some number-carrying users are temporarily unable to receive short messages from third parties due to the change of data interface. Please call Netease customer service hotline for consultation. Reason 3: Mobile phone security software interception (for smartphone users who have installed security software) Solution: Open the mobile phone security software, temporarily turn off the interception function, and then try to obtain the verification code again. Reason 4: SMS gateway is congested or abnormal. Solution: When the SMS gateway is congested or abnormal, the sent SMS will be delayed or lost. I suggest you try to get it in the future. Reason 5: The mobile phone is used abroad or used abroad. Solution: Due to the business influence of the mobile phone service operator, the mobile phone cannot receive the verification code when it is used abroad or overseas. It is recommended to replace the mobile phone as much as possible. Reason 6: People around you can use it normally, but they can't get a solution: it may be the problem of the mobile phone itself. It is recommended to change the mobile phone card to someone else's mobile phone and try again.

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.