How many digits is the SMS code of Didi Daidai?

Usually 4 to 6 digits. The SMS number of Didi Chuxing is an Internet phone, so it is randomly changed, which is different from the fixed number of the customer service hotline. If Didi's SMS notification appears on the mobile phone screen, it may be a taxi or an activity notification sent by the platform. After receiving the short message of Didi Publicity or Service Promotion, you can carefully observe the sending number of the short message, which is different every time and changes very frequently. But the content is still worth reading to avoid missing any good promotion.