diff --git a/components/DeviceStatusCard.vue b/components/DeviceStatusCard.vue
index 07fd8ee..32408cb 100644
--- a/components/DeviceStatusCard.vue
+++ b/components/DeviceStatusCard.vue
@@ -25,7 +25,7 @@
 		<view class="device-metrics flex-row-sb mt-md">
 			<view class="metric-item flex-col-center">
 				<view class="caption mb-xs">信号强度</view>
-				<view class="metric-value">{{ getSignalText(deviceInfo) }}</view>
+				<view class="metric-value">{{ deviceInfo.signal_quality || '暂无数据' }}</view>
 			</view>
 			<view class="metric-item flex-col-center">
 				<view class="caption mb-xs">设备电量</view>
@@ -36,12 +36,14 @@
 				<view class="metric-value">{{ deviceInfo.connCnt }}/{{ deviceInfo.max_clients }}</view>
 			</view>
 		</view>
+		<view v-if="deviceInfo.signal_bad_reason" class="signal-reason">
+			<text class="signal-reason-label">怀疑原因：</text>
+			<text class="signal-reason-text">{{ deviceInfo.signal_bad_reason }}</text>
+		</view>
 	</view>
 </template>
 
 <script setup>
-	import { getNetworkLevelByMetrics } from '@/utils/networkSignal.js';
-
 	defineProps({
 		deviceInfo: { type: Object, default: () => ({}) },
 		isRealName: { type: Boolean, default: false },
@@ -50,9 +52,6 @@
 	});
 
 	defineEmits(['authentication']);
-
-	const getSignalText = (deviceInfo) =>
-		getNetworkLevelByMetrics(deviceInfo?.rsrp, deviceInfo?.rsrq, deviceInfo?.sinr);
 </script>
 
 <style scoped lang="scss">
@@ -84,5 +83,16 @@
 				flex: 1;
 			}
 		}
+
+		.signal-reason {
+			margin-top: 16rpx;
+			font-size: 24rpx;
+			line-height: 1.5;
+			color: var(--text-secondary);
+		}
+
+		.signal-reason-label {
+			color: var(--text-primary);
+		}
 	}
 </style>
diff --git a/pages/index/index.vue b/pages/index/index.vue
index f0dee05..85e7253 100644
--- a/pages/index/index.vue
+++ b/pages/index/index.vue
@@ -155,10 +155,8 @@
 		totalBytesCnt: 0,
 		ssidName: '-',
 		ssidPwd: '-',
-		rssi: '-',
-		rsrp: '-',
-		rsrq: '-',
-		sinr: '-',
+		signal_quality: '暂无数据',
+		signal_bad_reason: '',
 		onlineStatus: '0',
 		connCnt: 0,
 		run_time: 0,
@@ -268,10 +266,8 @@
 				deviceInfo.connCnt = rt.client_number ?? 0;
 				deviceInfo.max_clients = rt.max_clients ?? 1;
 				deviceInfo.run_time = rt.run_time || 0;
-				deviceInfo.rssi = rt.rssi ?? '-';
-				deviceInfo.rsrp = rt.rsrp ?? '-';
-				deviceInfo.rsrq = rt.rsrq ?? '-';
-				deviceInfo.sinr = rt.sinr ?? '-';
+				deviceInfo.signal_quality = rt.signal_quality || '暂无数据';
+				deviceInfo.signal_bad_reason = rt.signal_bad_reason || '';
 			} else {
 				// 没有实时信息时设置默认值
 				deviceInfo.onlineStatus = '0';
@@ -282,10 +278,8 @@
 				deviceInfo.connCnt = 0;
 				deviceInfo.max_clients = 1;
 				deviceInfo.run_time = 0;
-				deviceInfo.rssi = '-';
-				deviceInfo.rsrp = '-';
-				deviceInfo.rsrq = '-';
-				deviceInfo.sinr = '-';
+				deviceInfo.signal_quality = '暂无数据';
+				deviceInfo.signal_bad_reason = '';
 			}
 
 			// 到期时间由 TrafficCard 组件获取套餐信息时一并返回
diff --git a/utils/networkSignal.js b/utils/networkSignal.js
deleted file mode 100644
index 97fbf0e..0000000
--- a/utils/networkSignal.js
+++ /dev/null
@@ -1,39 +0,0 @@
-const isEmptyValue = (value) => value === null || value === undefined || value === '' || value === '-';
-
-const toFiniteNumber = (value) => {
-	if (isEmptyValue(value)) return null;
-
-	const numericValue = Number(value);
-	return Number.isFinite(numericValue) ? numericValue : null;
-};
-
-const clampScore = (value) => Math.min(Math.max(value, 0), 100);
-
-export const getNetworkScore = (rsrp, rsrq, sinr) => {
-	const rsrpValue = toFiniteNumber(rsrp);
-	const rsrqValue = toFiniteNumber(rsrq);
-	const sinrValue = toFiniteNumber(sinr);
-
-	const metrics = [
-		{ score: rsrpValue === null ? null : clampScore((rsrpValue + 120) * 2), weight: 0.5 },
-		{ score: sinrValue === null ? null : clampScore(sinrValue * 5), weight: 0.3 },
-		{ score: rsrqValue === null ? null : clampScore((rsrqValue + 20) * 5), weight: 0.2 }
-	].filter(item => item.score !== null);
-
-	if (!metrics.length) return null;
-
-	const totalWeight = metrics.reduce((sum, item) => sum + item.weight, 0);
-	return metrics.reduce((sum, item) => sum + item.score * item.weight, 0) / totalWeight;
-};
-
-export const getNetworkLevel = (score) => {
-	if (score === null || score === undefined || !Number.isFinite(score)) return '-';
-	if (score >= 85) return '极好';
-	if (score >= 70) return '良好';
-	if (score >= 50) return '一般';
-	if (score >= 30) return '较差';
-	return '很差';
-};
-
-export const getNetworkLevelByMetrics = (rsrp, rsrq, sinr) =>
-	getNetworkLevel(getNetworkScore(rsrp, rsrq, sinr));