diff --git a/components/DeviceStatusCard.vue b/components/DeviceStatusCard.vue
index 18f7083..07fd8ee 100644
--- a/components/DeviceStatusCard.vue
+++ b/components/DeviceStatusCard.vue
@@ -7,11 +7,11 @@
 		<view class="device-info flex-col-g16">
 			<view class="info-row flex-row-sb">
 				<view class="info-label">
-					<view class="subtitle">当前卡: {{ deviceInfo.currentIccid }}</view>
+					<view class="subtitle">当前卡号 {{ deviceInfo.currentIccid }}</view>
 				</view>
 				<view class="info-values flex-row-g20" @tap="$emit('authentication')">
 					<view class="tag-apple" :class="isRealName ? 'tag-success' : 'tag-warning'">
-						{{ isRealName ? "已实名" : "未实名" }}
+						{{ isRealName ? '已实名' : '未实名' }}
 					</view>
 				</view>
 			</view>
@@ -40,7 +40,9 @@
 </template>
 
 <script setup>
-	const props = defineProps({
+	import { getNetworkLevelByMetrics } from '@/utils/networkSignal.js';
+
+	defineProps({
 		deviceInfo: { type: Object, default: () => ({}) },
 		isRealName: { type: Boolean, default: false },
 		isDevice: { type: Boolean, default: true },
@@ -49,34 +51,8 @@
 
 	defineEmits(['authentication']);
 
-	const normalizeSignalScore = (value, min, max) => {
-		if (value === null || value === undefined || value === '' || value === '-') return null;
-
-		const numericValue = Number(value);
-		if (!Number.isFinite(numericValue)) return null;
-		if (numericValue <= min) return 0;
-		if (numericValue >= max) return 100;
-
-		return ((numericValue - min) / (max - min)) * 100;
-	};
-
-	const getSignalText = (deviceInfo) => {
-		const signalScores = [
-			{ score: normalizeSignalScore(deviceInfo?.rsrp, -120, -80), weight: 0.5 },
-			{ score: normalizeSignalScore(deviceInfo?.rsrq, -20, -10), weight: 0.25 },
-			{ score: normalizeSignalScore(deviceInfo?.rssi, -100, -65), weight: 0.25 }
-		].filter(item => item.score !== null);
-
-		if (!signalScores.length) return '-';
-
-		const totalWeight = signalScores.reduce((sum, item) => sum + item.weight, 0);
-		const weightedScore =
-			signalScores.reduce((sum, item) => sum + item.score * item.weight, 0) / totalWeight;
-
-		if (weightedScore >= 67) return '强';
-		if (weightedScore >= 34) return '中';
-		return '弱';
-	};
+	const getSignalText = (deviceInfo) =>
+		getNetworkLevelByMetrics(deviceInfo?.rsrp, deviceInfo?.rsrq, deviceInfo?.sinr);
 </script>
 
 <style scoped lang="scss">
@@ -84,15 +60,29 @@
 		.info-row {
 			padding: var(--space-sm) 0;
 			border-bottom: 1rpx solid var(--gray-200);
-			&:last-child { border-bottom: none; }
-			.info-label { min-width: 200rpx; }
-			.info-values { flex: 1; justify-content: flex-end; }
+
+			&:last-child {
+				border-bottom: none;
+			}
+
+			.info-label {
+				min-width: 200rpx;
+			}
+
+			.info-values {
+				flex: 1;
+				justify-content: flex-end;
+			}
 		}
+
 		.device-metrics {
 			background: var(--gray-100);
 			border-radius: var(--radius-small);
 			padding: 20rpx;
-			.metric-item { flex: 1; }
+
+			.metric-item {
+				flex: 1;
+			}
 		}
 	}
 </style>
diff --git a/pages/index/index.vue b/pages/index/index.vue
index 14eece9..f0dee05 100644
--- a/pages/index/index.vue
+++ b/pages/index/index.vue
@@ -158,6 +158,7 @@
 		rssi: '-',
 		rsrp: '-',
 		rsrq: '-',
+		sinr: '-',
 		onlineStatus: '0',
 		connCnt: 0,
 		run_time: 0,
@@ -270,6 +271,7 @@
 				deviceInfo.rssi = rt.rssi ?? '-';
 				deviceInfo.rsrp = rt.rsrp ?? '-';
 				deviceInfo.rsrq = rt.rsrq ?? '-';
+				deviceInfo.sinr = rt.sinr ?? '-';
 			} else {
 				// 没有实时信息时设置默认值
 				deviceInfo.onlineStatus = '0';
@@ -283,6 +285,7 @@
 				deviceInfo.rssi = '-';
 				deviceInfo.rsrp = '-';
 				deviceInfo.rsrq = '-';
+				deviceInfo.sinr = '-';
 			}
 
 			// 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
new file mode 100644
index 0000000..97fbf0e
--- /dev/null
+++ b/utils/networkSignal.js
@@ -0,0 +1,39 @@
+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));