Sorry for being not clear, by the network I meant the Internet connection. I would try to Google first to have a general idea, there are usually many complaint

Sorry for being not clear, by the network I meant the Internet connection. I would try to Google first to have a general idea, there are usually many complaints if the connection is bad or problematic. Also, websites like Nomad List scores Internet connection for most of the cities (gladly it's not behind the paywall). This should clear major pitfalls already. In the end, I would travel there to see for myself for two or three days. It should be easy because it's domestic or neighboring countries. Not only for the Internet connection but for everything to see if I really want to stay here for a while.