After arriving in Songjiang, there is no traffic on the mobile phone, and it is also very difficult to send text messages with wifi. Is this station far away? How to solve

If it is a company, home and other fixed places, you can make your own wifi, connect the wireless router on the network, and connect your mobile phone to this wireless router.

If you can't connect to the wireless router, you can directly complain to China Mobile or China Unicom. Generally, they will tell you where the signal is better around here, or how long it will take you to add base stations to improve the signal. Of course, it takes a long time to solve the problem.

There is no fixed place, just wandering around the whole Songjiang area ... Congratulations, it is difficult for Americans to find your missile.