Can Unicom wireless network card iphone4S work?

1. If your iPhone5C supports China Unicom's 2G or 3G network, the network card can be used for data service and point-to-point SMS service, but it does not support voice service (voice function is turned off by default for wireless network cards). 2. When using the network card on the iPhone5C, the fees will be calculated according to the network card charges, and no separate charges will be charged. 3. Because the wireless network card turns off the voice function by default, it does not support the use of voice services when used in the iPhone5C, and there are no other restrictions.