diff --git a/web/src/components/devices/DeviceOverviewTab.tsx b/web/src/components/devices/DeviceOverviewTab.tsx
index 664963a..a7c7c83 100644
--- a/web/src/components/devices/DeviceOverviewTab.tsx
+++ b/web/src/components/devices/DeviceOverviewTab.tsx
@@ -19,7 +19,7 @@ export interface DeviceOverviewTabProps {
   trafficMinuteTx: string;
   e911Starting: boolean;
   onSetupE911: () => void;
-  onRefresh: () => void;
+  onRefresh: () => void | Promise<void>;
 }
 
 export function DeviceOverviewTab(props: DeviceOverviewTabProps) {
@@ -45,6 +45,7 @@ export function DeviceOverviewTab(props: DeviceOverviewTabProps) {
           customPhoneNumber={props.customPhoneNumber}
           e911Starting={props.e911Starting}
           onSetupE911={props.onSetupE911}
+          onRefreshOverview={props.onRefresh}
         />
 		{showNetworkDetails ? <OverviewNetworkPanel
           device={device}
diff --git a/web/src/components/devices/OverviewSimPanel.tsx b/web/src/components/devices/OverviewSimPanel.tsx
index 6379f6e..bdbd583 100644
--- a/web/src/components/devices/OverviewSimPanel.tsx
+++ b/web/src/components/devices/OverviewSimPanel.tsx
@@ -6,6 +6,7 @@ import type { DeviceDetail } from "./types";
 import { useI18n } from "../../lib/i18n";
 import { carrierIso } from "../../lib/carrier";
 import { CountryFlag } from "../CountryFlag";
+import { SMSChannelStatusRow } from "./SMSChannelStatusRow";
 
 export interface OverviewSimPanelProps {
   device: DeviceDetail;
@@ -13,9 +14,10 @@ export interface OverviewSimPanelProps {
   customPhoneNumber?: string;
   e911Starting: boolean;
   onSetupE911: () => void;
+  onRefreshOverview: () => void | Promise<void>;
 }
 
-export function OverviewSimPanel({ device, simOperatorDisplay, customPhoneNumber, e911Starting, onSetupE911 }: OverviewSimPanelProps) {
+export function OverviewSimPanel({ device, simOperatorDisplay, customPhoneNumber, e911Starting, onSetupE911, onRefreshOverview }: OverviewSimPanelProps) {
   const { t } = useI18n();
   const [showSensitive, toggleSensitive] = useShowSensitive();
   const modem = device.modem;
@@ -43,6 +45,7 @@ export function OverviewSimPanel({ device, simOperatorDisplay, customPhoneNumber
         <FieldRow label="ICCID" value={modem?.iccid} sensitive={sensitive} monospace copyable />
         <FieldRow label="IMSI" value={modem?.imsi} sensitive={sensitive} monospace copyable />
         <FieldRow label={t("本机号码")} value={displayedPhoneNumber} sensitive={sensitive} monospace copyable />
+        <SMSChannelStatusRow device={device} onRefreshOverview={onRefreshOverview} />
         {device?.e911SetupAvailable ? (
           <div className="flex justify-between gap-3">
             <span className="text-gray-500">{t("E911地址")}</span>
diff --git a/web/src/components/devices/SMSChannelStatusRow.tsx b/web/src/components/devices/SMSChannelStatusRow.tsx
new file mode 100644
index 0000000..92a5a8f
--- /dev/null
+++ b/web/src/components/devices/SMSChannelStatusRow.tsx
@@ -0,0 +1,115 @@
+import { useCallback, useEffect, useRef, useState } from "react";
+import { ArrowSyncRegular } from "@fluentui/react-icons";
+import { apiMessage } from "../../api";
+import { Tag, type TagType } from "../ui/Tag";
+import { message } from "../ui";
+import { cx } from "../../lib/utils";
+import { useI18n } from "../../lib/i18n";
+import { getCellularIMS, type CellularIMSStatus } from "./deviceActions";
+import { isDeviceOnline, isVoWiFiInUse } from "./shared";
+import type { DeviceDetail } from "./types";
+
+interface SMSChannelStatusRowProps {
+  device: DeviceDetail;
+  onRefreshOverview: () => void | Promise<void>;
+}
+
+interface DisplayStatus {
+  label: string;
+  tone: TagType;
+}
+
+export function SMSChannelStatusRow({ device, onRefreshOverview }: SMSChannelStatusRowProps) {
+  const { t } = useI18n();
+  const [cellular, setCellular] = useState<CellularIMSStatus | null>(null);
+  const [loading, setLoading] = useState(false);
+  const requestSequence = useRef(0);
+
+  const iccid = (device.modem?.iccid || "").trim();
+  const usesVoWiFi = isVoWiFiInUse(device) && !(device.modem?.imei && device.modem?.simInserted === false);
+  const canProbeCellular = !usesVoWiFi && isDeviceOnline(device) && !!iccid && device.modem?.simInserted !== false;
+
+  const probeCellular = useCallback(async () => {
+    if (!canProbeCellular) return;
+    const sequence = ++requestSequence.current;
+    setLoading(true);
+    try {
+      const next = await getCellularIMS(device.id);
+      if (sequence === requestSequence.current) setCellular(next);
+    } catch {
+      if (sequence === requestSequence.current) setCellular(null);
+    } finally {
+      if (sequence === requestSequence.current) setLoading(false);
+    }
+  }, [canProbeCellular, device.id]);
+
+  // The overview tab is conditionally mounted, so this runs once when users
+  // return to it and again when the active device/SIM/profile changes.
+  useEffect(() => {
+    requestSequence.current += 1;
+    setCellular(null);
+    setLoading(false);
+    if (canProbeCellular) void probeCellular();
+    return () => {
+      requestSequence.current += 1;
+    };
+  }, [canProbeCellular, device.id, iccid, device.activeEsimProfileName, usesVoWiFi, probeCellular]);
+
+  const refresh = async () => {
+    if (loading) return;
+    if (usesVoWiFi) {
+      const sequence = ++requestSequence.current;
+      setLoading(true);
+      try {
+        await onRefreshOverview();
+      } catch (error) {
+        if (sequence === requestSequence.current) {
+          message.error(apiMessage(error) || t("刷新短信通道状态失败"));
+        }
+      } finally {
+        if (sequence === requestSequence.current) setLoading(false);
+      }
+      return;
+    }
+    await probeCellular();
+  };
+
+  let display: DisplayStatus;
+  if (usesVoWiFi) {
+    if (device.vowifiRuntime?.smsReady) display = { label: t("已就绪(VoWiFi)"), tone: "success" };
+    else if (device.vowifiRuntime?.imsReady) display = { label: t("已注册(IMS)"), tone: "success" };
+    else if (device.vowifiRuntime?.enabled) display = { label: t("未注册短信域"), tone: "warning" };
+    else display = { label: t("状态未知"), tone: "info" };
+  } else if (!canProbeCellular || !cellular) {
+    display = { label: t("状态未知"), tone: "info" };
+  } else if (cellular.registered && cellular.csRegistered) {
+    display = { label: t("已注册(CS, IMS)"), tone: "success" };
+  } else if (cellular.registered) {
+    display = { label: t("已注册(IMS)"), tone: "success" };
+  } else if (cellular.csRegistered) {
+    display = { label: t("已注册(CS)"), tone: "success" };
+  } else if (cellular.csKnown && cellular.supported) {
+    display = { label: t("未注册短信域"), tone: "warning" };
+  } else {
+    display = { label: t("状态未知"), tone: "info" };
+  }
+
+  return (
+    <div className="flex w-full min-w-0 items-center justify-between gap-3">
+      <span className="shrink-0 whitespace-nowrap text-gray-500">{t("短信通道")}</span>
+      <div className="flex min-w-0 items-center justify-end gap-1.5">
+        <Tag type={display.tone}>{display.label}</Tag>
+        <button
+          type="button"
+          onClick={() => void refresh()}
+          disabled={loading}
+          title={t("刷新短信通道状态")}
+          aria-label={t("刷新短信通道状态")}
+          className="rounded p-1 text-gray-400 transition-colors hover:bg-black/5 hover:text-gray-600 disabled:cursor-not-allowed disabled:opacity-60 dark:hover:bg-white/10 dark:hover:text-gray-200"
+        >
+          <ArrowSyncRegular className={cx("h-4 w-4", loading && "animate-spin")} />
+        </button>
+      </div>
+    </div>
+  );
+}
diff --git a/web/src/lib/i18n-en.ts b/web/src/lib/i18n-en.ts
index a89c806..982b9c1 100644
--- a/web/src/lib/i18n-en.ts
+++ b/web/src/lib/i18n-en.ts
@@ -1208,6 +1208,15 @@ export const EN_DICT: Record<string, string> = {
   // Additional missing system strings
   "端口": "Port",
   "错误详情": "Error Details",
+  "短信通道": "SMS channel",
+  "刷新短信通道状态": "Refresh SMS channel status",
+  "刷新短信通道状态失败": "Failed to refresh SMS channel status",
+  "已注册(CS)": "Registered (CS)",
+  "已注册(IMS)": "Registered (IMS)",
+  "已注册(CS, IMS)": "Registered (CS, IMS)",
+  "已就绪(VoWiFi)": "Ready (VoWiFi)",
+  "未注册短信域": "No SMS domain registered",
+  "状态未知": "Unknown",
   "正在搜索网络": "Searching network",
   "SM-DP+ 的公开 Profile 库存已耗尽，请稍后重试或更换服务。":
     "The public profile inventory on the SM-DP+ is exhausted. Please try again later or use a different service.",
@@ -1218,4 +1227,3 @@ export const EN_DICT: Record<string, string> = {
   "已发现该模组，但未找到 AT 串口：通常是 option 驱动未认该 PID 或模组处于 MBIM/RNDIS 组态。可 ":
     "Modem detected, but no AT serial port found: option driver may not recognize this PID or modem is in MBIM/RNDIS mode. You can ",
 };
-