What the Location Toggle Actually DoesFirst, the location toggle only works for the GPS hardware inside the phone. GPS tracking is accurate within a few meters, but satellite-based tracking isn’t the only way to precisely track your phone. By tracing the Wi-Fi signal strength, the app can tell how far away you are from that particular Wi-Fi access point. Most apps never need your location access anyway, so it’s a good idea to keep their location services off. Turning the GPS chip off, which is all that the location toggle does, is far from the only tracking point.