1. Using Unicom's 4G package or package has enabled the 4G network function;
2. The mobile terminal supports Unicom's 4G network;
3. The location covers Unicom's 4G network;
4. The card number is USIM card.
So you can check whether you meet the above conditions, and then you can use Unicom's 4G network. For more details, please contact local customer service.