Trailcall is an offline walkie-talkie for iPhone. It works only between iPhones running Trailcall, directly over Wi-Fi and Bluetooth. No account, no internet and no mobile network are needed.
Open Trailcall on both iPhones, turn Wi-Fi and Bluetooth on in Control Center (no network needed), choose the same channel and PIN, and stay close together. If it still fails, check Settings → Privacy & Security → Local Network → Trailcall is on.
Hold the big button while talking; the first talk asks for Microphone permission. Turn up the volume on the listening phone and make sure it is not in a call.
Keep “Listen with screen off” on in Trailcall Settings and stay in the channel. Leaving the channel stops listening.
Range depends on surroundings, obstacles and the phones; open terrain works best. Trailcall makes no fixed range promise.
SOS only alerts nearby iPhones that have Trailcall open. It does not call emergency services. If you can, call your local emergency number.
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