Hello, the Unicom signal is quite good, Unicom has always attached great importance to network construction, and every year continue to invest funds to increase the large-scale construction of the network, and specifically set up an optimization team dedicated to network quality improvement, at present in the country's provinces and municipalities have been basically covered by the Unicom network, you can search for Unicom signals to use in your local area or to contact the local artificial customer service to assist in the query, the specific to the actual local network conditions prevail.

On the other hand, we also have a newer version of the same product, which has a newer version of the original.