How to use telecom mobile phone card for Unicom mobile phone?

The following conditions are required to use Unicom Unicom Card: 1. The mobile phone terminal must be a terminal supporting Unicom's 3G/4G network standard; Mobile phone charges must be Unicom 3G/4G package charges, or Unicom 3G/4G network has been opened; 2. Unicom 3G/4G network can only be used under the signal coverage of Unicom 3G/4G network. As long as it is within the coverage of Unicom's 4G network signal, it can be used normally. If there is no 4G network coverage, Unicom 3G and 2G networks can be used for backward compatibility. 3. Network signals will be affected by many factors such as topography, landforms, tall buildings and climate. 4. Turn on 3G/4G for mobile terminal network settings.