Some do, some don't. Take the action as an example: \x0d\ The credit card consumption of China Merchants Bank does not exceed 100 yuan, and there is no SMS reminder. Consumption will not be reminded until it reaches 300 yuan, which is why some people will have SMS reminders, while others will not. \x0d\ When using the secondary card of China Merchants Bank's credit card, the cardholder of the primary card will not receive the SMS prompt regardless of the amount, but the cardholder of the primary card will receive the email of the secondary card consumption details the next day. \x0d\ There is no separate bill for the supplementary card of China Merchants Bank Credit Card. The monthly consolidated bill of the main card and the supplementary card will be sent (or emailed) to the main card holder. If you want to check, you can ask the main cardholder.