The Live Activity work well in my iPhone13 & iPhone14, but nothing happened in the lock screen after I activate the Live Activity in the iPhone12, ran iOS16.7.2, with all the permission are approved. Active @objc func onOpen() { guard ActivityAuthorizationInfo().areActivitiesEnabled else { return } do { let attributes = LiveActivityWidgetAttributes(location: "OF01 Apartments", machine: "DS 12") let content = actvityContent(progress: 0, washingTime: Int(self.runningTime), isDone: false) self.liveActivity = try Activity<LiveActivityWidgetAttributes>.request(attributes: attributes, content: content) self.initialTimeStamp = Int(Date().timeIntervalSince1970) self.activeTimer() self.lastTimeStamp = Int(Date().timeIntervalSince1970) } catch { debugPrint("failed open") } } Update @objc func onUpdate() { Task { let current = Int(Date().timeIntervalSince1970) let passed = current - self.initialTimeStamp let pgs = (Double(passed) / 60.0 / self.runningTime) > 1 ? 1 : Double(passed) / 60.0 / self.runningTime let remainingMnts = Int(ceil((self.runningTime * 60.0 - Double(passed)) / 60)) self.progress = ceil(Double(passed) / self.timerStep) let content = actvityContent(progress: pgs, washingTime: remainingMnts, isDone: (pgs == 1)) await liveActivity?.update(content) } }