While you can't test actual carrier connections, you can simulate connection types and conditions using the network shaping functionality. When scheduling a run, you can select a curated network profile like "3G" or "Lossy LTE," or you can create your own, controlling parameters like throughput, jitter, and loss. All WiFi traffic from the device will be shaped and manipulated for the duration of your tests according to the profile you choose. You can also simulate dynamic environments by changing network parameters from your test scripts.