I'm a 4g user of Unicom, but the traffic has run out. How to increase traffic through SMS?

At present, 4G has not launched a superimposed traffic package. If the traffic is used up, if it is a national package of 4G(4G/3G comprehensive tariff), you can choose to use it directly. If it exceeds 0.3 yuan /M and reaches 200M, it will send 824M more, which is equivalent to the direct use of 1g traffic in 60 yuan. After it is exceeded, it will be accumulated according to the above charging mode. Those who fail to reach 60 yuan will be deducted as much as they use. There is also a six-month package for ordering traffic through Unicom's online business hall or mobile phone business hall.