Does Telecom have a supplementary card?

China Telecom in Beijing has introduced that post-paid 3G users can apply for a supplementary card at the same time, and the supplementary card can be set as a separate number, so that calls with the main card users are free, and messages are sent to each other requesting that the main card is an all-round version of Le Xiang 3G package, and the main card can subscribe to short messages. When your Internet terminal is using the secondary card, you can use the primary card to enjoy the package Internet traffic, and the primary card pays the bill.