100 1 Is it true to send a text message to receive a birthday call?

No, it can only be said that it is a marketing message, the purpose of which is to let you recharge your phone bill within the time limit. Their purpose is to make money. It's a marketing activity that lets you recharge your phone bill for free. This is an activity package. Holding this activity is a marketing strategy to attract customers. Holding such activities is a marketing strategy to attract customers.