Pokemon Duel users playing on the T-Mobile cellular network may notice that they are unable to join matches. When entering a duel, a message, “The other party is connecting”, will display on the top-right corner of the loading screen.
The message is then followed by a “Duel ended due to lost connection. Playing somewhere with a strong signal is recommended.” error.
To play Pokemon Duel on the T-Mobile cellular network, you will need to use a VPN such as Opera VPN or Windscribe VPN (both free). Simply download and install the VPN and turn it on before playing Pokemon Duel. Otherwise, you will need to connect to a Wi-Fi network to play Pokemon Duel.