Excuse me, how to open a traffic overlay package from Guangzhou mobile phone card to Guangxi?

SMS processing method: Send SMS BLGPRSDJB to 10086, reply according to the SMS content and select the corresponding overlay package. Effective time description: the superimposed package takes effect within 24 hours, and the expiration time varies according to the number and brand. GSM will be cancelled automatically at 0: 00 next month 1 day and become invalid; M-Zone and China Bank will be cancelled and invalidated automatically at 0: 00 on the closing day of next month. The package flow is not used up, so it cannot be transferred to next month.