diff --git a/src/locales/en.ts b/src/locales/en.ts
index 0af95fd..83331ec 100644
--- a/src/locales/en.ts
+++ b/src/locales/en.ts
@@ -123,8 +123,12 @@ export const en = {
       mobileClaimDescription: (mobile: string) =>
         `A mobile-only account with ${mobile} already exists. Verify the code sent to that number to attach Google and keep that account.`,
       errorTitle: "Google sign in could not be completed",
+      cancelled: "Google sign in was cancelled before it could be completed.",
       missingFlow: "The Google sign-in flow is missing or has expired.",
       loadFailed: "We could not load your Google sign-in state.",
+      callbackFailed: "We could not complete Google sign in. Please try again.",
+      tokenExchangeFailed: "Google sign in is temporarily unavailable. Please try again in a few minutes.",
+      profileLookupFailed: "We could not load your Google profile. Please try again.",
       completeFailed: "We could not finish your Google account setup.",
       claimOtpSent: "Verification code sent successfully.",
       googleAccount: "Google account",
diff --git a/src/locales/fa.ts b/src/locales/fa.ts
index 224cd99..17dbee7 100644
--- a/src/locales/fa.ts
+++ b/src/locales/fa.ts
@@ -123,8 +123,12 @@ export const fa = {
       mobileClaimDescription: (mobile: string) =>
         `حسابی بدون ایمیل با شماره ${mobile} از قبل وجود دارد. کد ارسال‌شده به این شماره را وارد کنید تا گوگل به همان حساب متصل شود.`,
       errorTitle: "ورود با گوگل کامل نشد",
+      cancelled: "فرآیند ورود با گوگل قبل از تکمیل لغو شد.",
       missingFlow: "جریان ورود با گوگل پیدا نشد یا منقضی شده است.",
       loadFailed: "بارگذاری وضعیت ورود با گوگل انجام نشد.",
+      callbackFailed: "تکمیل ورود با گوگل انجام نشد. لطفاً دوباره تلاش کنید.",
+      tokenExchangeFailed: "ورود با گوگل موقتاً در دسترس نیست. چند دقیقه دیگر دوباره تلاش کنید.",
+      profileLookupFailed: "دریافت اطلاعات حساب گوگل انجام نشد. لطفاً دوباره تلاش کنید.",
       completeFailed: "تکمیل ساخت حساب با گوگل انجام نشد.",
       claimOtpSent: "کد تایید با موفقیت ارسال شد.",
       googleAccount: "حساب گوگل",
diff --git a/src/pages/GoogleAuthCallback.tsx b/src/pages/GoogleAuthCallback.tsx
index 27d18b3..1f5db70 100644
--- a/src/pages/GoogleAuthCallback.tsx
+++ b/src/pages/GoogleAuthCallback.tsx
@@ -34,6 +34,8 @@ export default function GoogleAuthCallback() {
   const isRtl = lang === "fa";
 
   const flow = searchParams.get("flow") ?? "";
+  const callbackErrorCode = searchParams.get("error") ?? "";
+  const callbackErrorDescription = searchParams.get("error_description") ?? "";
 
   const [step, setStep] = useState<GoogleStep>("loading");
   const [loading, setLoading] = useState(false);
@@ -50,6 +52,22 @@ export default function GoogleAuthCallback() {
     otpVerify: 0,
   });
 
+  const resolveCallbackErrorMessage = () => {
+    if (callbackErrorCode === "access_denied") {
+      return t.login.google.cancelled;
+    }
+    if (callbackErrorDescription) {
+      if (callbackErrorDescription === "Google token exchange failed.") {
+        return t.login.google.tokenExchangeFailed;
+      }
+      if (callbackErrorDescription === "Google user profile lookup failed.") {
+        return t.login.google.profileLookupFailed;
+      }
+      return callbackErrorDescription;
+    }
+    return t.login.google.callbackFailed;
+  };
+
   useEffect(() => {
     if (!Object.values(cooldowns).some((value) => value > 0)) {
       return;
@@ -138,6 +156,12 @@ export default function GoogleAuthCallback() {
   };
 
   useEffect(() => {
+    if (callbackErrorCode) {
+      setErrorMessage(resolveCallbackErrorMessage());
+      setStep("error");
+      return;
+    }
+
     if (!flow) {
       setErrorMessage(t.login.google.missingFlow);
       setStep("error");
@@ -170,7 +194,7 @@ export default function GoogleAuthCallback() {
     return () => {
       cancelled = true;
     };
-  }, [flow]);
+  }, [callbackErrorCode, callbackErrorDescription, flow, lang]);
 
   const handleCompleteSignup = async (event: React.FormEvent) => {
     event.preventDefault();