If the network speed is fast, it must be Unicom WCDMA, Unicom 4g, and if the points are exchanged for gifts, it should be similar. In the 4G stage, it is better to use a mobile card. I think it is better to move.
China Unicom has always attached great importance to network construction, continuously invested money to increase the scale of network construction every year, and set up an optimization team to improve network quality. At present, the Unicom network has basically covered all provinces and cities in China. According to the local actual network situation, you can search and use Unicom signals locally or contact local manual customer service for help.