Troubleshoot no signal or "no service" errors Turn off Wi-Fi to make sure you're using the T-Mobile network. Set the device Network mode to Auto. Remove any cases or covers from the device. Update the device software to the latest version.

But on the flip side, T-Mobile doesn't necessarily have the consistency of a cable internet plan. With home 5G, your internet speeds depend on a carrier's 5G network in your area, and not all 5G coverage is built the same. There's a reason why T-Mobile lists such wide ranges for its upload and download speeds.

Check and make sure that your phone isn't on Airplane Mode — you can do this by checking your phone's control center and making sure the "Airplane" icon is turned off. You could also try re-inserting your SIM card into your phone. This resets your phone's connection to the SIM card.