Siri usually stops working because of settings, connection, or microphone/software issues on your Apple device. Without more detail about your device or what “not working” looks like, the cause has to be narrowed down step by step.

Common causes

• Siri or “Hey Siri” is turned off in Settings, so the assistant never activates.

• Your Wi‑Fi or mobile data is off or unstable, which prevents Siri from handling most requests.

• The microphone is blocked by dust, a case, or a connected Bluetooth headset, so Siri cannot hear you properly.

• There is a temporary software glitch or outdated iOS/iPadOS/macOS version.

Quick things to try

• Open Settings and check the Siri/Apple Intelligence & Siri section to be sure Siri and “Hey Siri” (or “Siri”) are enabled, then re‑run the voice setup if needed.

• Make sure you have internet access by loading a webpage; if it is slow or fails, fix Wi‑Fi or cellular, then test Siri again.

• Disconnect or power off Bluetooth headphones/speakers and gently clean the mic openings, then try Siri directly on the device.

• Restart the device and, if problems persist, check for a software update in Settings → General → Software Update and install any pending update.

If you say what device you use (iPhone, iPad, Mac, Watch, CarPlay) and exactly what happens when you try Siri (no response, error message, can’t hear you, etc.), more specific steps can be given.