Can I make a phone call and send a text message with Unicom 3G card? Xiaomi 3 Mobile Edition?

Xiaomi 3 mobile phone terminal can use Unicom 3G card. The network standards supported by Xiaomi 3 mobile terminal are as follows: As can be seen from the parameters in the figure, the mobile terminal supports mobile 3G, 2G networks and Unicom's 2G networks. Therefore, Xiaomi 3 mobile phone terminal can use Unicom 3G card, but only use 2G network. If Unicom 3G mobile phone card is inserted, the voice and data service charges and other service charges have nothing to do with the network used, and the charges will be charged according to the selected 3G package tariff standard and charging principle.