How to send SMS to apply for 15 yuan SMS package of Beijing Unicom?

this machine sends SMS "SQDX15" to 11 to apply for 15 yuan SMS package. Only ruyitong and prepaid mobile phones are available.

Tips:

1. Prepaid customers will not accept applications for SMS and MMS packages or cancel their business from 12: on the last day of each month to 8: the next day;

2. Post-paid customers will not accept applications for "SMS package" and "MMS package" or cancel their business from 2: to 24: on the last day of each month.