diff --git a/code/code.go b/code/code.go
index 54da9ae0..96ef4826 100644
--- a/code/code.go
+++ b/code/code.go
@@ -66,18 +66,19 @@ var (
 
 // device related: [50, 70)
 var (
-	DeviceConnectionError = errors.New("device general connection error") // 50
-	DeviceHTTPDriverError = errors.New("device HTTP driver error")        // 51
-	DeviceUSBDriverError  = errors.New("device USB driver error")         // 52
-	DeviceAppNotInstalled = errors.New("device app not installed")        // 59
-	DeviceGetInfoError    = errors.New("device get info error")           // 60
-	DeviceConfigureError  = errors.New("device configure error")          // 61
-	DeviceShellExecError  = errors.New("device shell exec error")         // 62
-	DeviceOfflineError    = errors.New("device offline")                  // 63
-	DeviceInstallFailed   = errors.New("device install app failed")       // 64
-	DeviceScreenShotError = errors.New("device screenshot error")         // 65
-	DeviceCaptureLogError = errors.New("device capture log error")        // 66
-	DeviceUIResponseSlow  = errors.New("device UI response slow")         // 67
+	DeviceConnectionError    = errors.New("device general connection error")    // 50
+	DeviceHTTPDriverError    = errors.New("device HTTP driver error")           // 51
+	DeviceUSBDriverError     = errors.New("device USB driver error")            // 52
+	DeviceUntrustedCertError = errors.New("device app certificate not trusted") // 53
+	DeviceAppNotInstalled    = errors.New("device app not installed")           // 59
+	DeviceGetInfoError       = errors.New("device get info error")              // 60
+	DeviceConfigureError     = errors.New("device configure error")             // 61
+	DeviceShellExecError     = errors.New("device shell exec error")            // 62
+	DeviceOfflineError       = errors.New("device offline")                     // 63
+	DeviceInstallFailed      = errors.New("device install app failed")          // 64
+	DeviceScreenShotError    = errors.New("device screenshot error")            // 65
+	DeviceCaptureLogError    = errors.New("device capture log error")           // 66
+	DeviceUIResponseSlow     = errors.New("device UI response slow")            // 67
 )
 
 // UI automation related: [70, 80)
@@ -176,18 +177,20 @@ var errorsMap = map[error]int{
 	UploadFailed:             49,
 
 	// device related
-	DeviceConnectionError: 50,
-	DeviceHTTPDriverError: 51,
-	DeviceUSBDriverError:  52,
-	DeviceAppNotInstalled: 59,
-	DeviceGetInfoError:    60,
-	DeviceConfigureError:  61,
-	DeviceShellExecError:  62,
-	DeviceOfflineError:    63,
-	DeviceInstallFailed:   64,
-	DeviceScreenShotError: 65,
-	DeviceCaptureLogError: 66,
-	DeviceUIResponseSlow:  67,
+	DeviceConnectionError:    50,
+	DeviceHTTPDriverError:    51,
+	DeviceUSBDriverError:     52,
+	DeviceUntrustedCertError: 53,
+	DeviceAppNotInstalled:    59,
+	DeviceGetInfoError:       60,
+	DeviceConfigureError:     61,
+	DeviceShellExecError:     62,
+	DeviceOfflineError:       63,
+	DeviceInstallFailed:      64,
+	DeviceScreenShotError:    65,
+	DeviceCaptureLogError:    66,
+	DeviceUIResponseSlow:     67,
+	DeviceUntrustedCertError: 68,
 
 	// UI automation related
 	MobileUIDriverAppNotInstalled:         68,
diff --git a/uixt/driver_session.go b/uixt/driver_session.go
index fddc04f7..10adbf60 100644
--- a/uixt/driver_session.go
+++ b/uixt/driver_session.go
@@ -202,8 +202,13 @@ func (s *DriverSession) RequestWithRetry(method string, urlStr string, rawBody [
 			synthesizeEventRetryAdded = true
 		}
 
-		// Notice: use DeviceHTTPDriverError when request driver failed
-		lastError = errors.Wrap(code.DeviceHTTPDriverError, err.Error())
+		// Check if it's already a DeviceOfflineError
+		if errors.Is(err, code.DeviceOfflineError) {
+			lastError = err
+		} else {
+			// Use DeviceHTTPDriverError for other errors
+			lastError = errors.Wrap(code.DeviceHTTPDriverError, err.Error())
+		}
 
 		// If this was the last attempt, break
 		if attempt == maxRetry {
@@ -294,6 +299,11 @@ func (s *DriverSession) Request(method string, urlStr string, rawBody []byte, op
 	driverResult.RequestTime = time.Now()
 	var resp *http.Response
 	if resp, err = s.client.Do(req); err != nil {
+		// Check for connection reset or EOF errors and classify as DeviceOfflineError
+		if strings.Contains(err.Error(), "read: connection reset by peer") ||
+			strings.Contains(err.Error(), "EOF") {
+			return nil, errors.Wrap(code.DeviceOfflineError, err.Error())
+		}
 		return nil, err
 	}
 	defer func() {
diff --git a/uixt/ios_driver_wda.go b/uixt/ios_driver_wda.go
index 283c5a92..0cb6d668 100644
--- a/uixt/ios_driver_wda.go
+++ b/uixt/ios_driver_wda.go
@@ -436,6 +436,13 @@ func (wd *WDADriver) AppLaunch(bundleId string) (err error) {
 	// 超时两分钟
 	_, err = wd.Session.POST(data, "/wings/apps/launch", option.WithTimeout(120))
 	if err != nil {
+		// Check for untrusted certificate error
+		errMsg := err.Error()
+		if strings.Contains(errMsg, "has not been explicitly trusted by the user") ||
+			strings.Contains(errMsg, "invalid code signature") ||
+			strings.Contains(errMsg, "inadequate entitlements") {
+			return errors.Wrap(code.DeviceUntrustedCertError, "App certificate not trusted: "+bundleId)
+		}
 		return errors.Wrap(err, "wda app launch failed")
 	}
 	return nil
@@ -443,10 +450,17 @@ func (wd *WDADriver) AppLaunch(bundleId string) (err error) {
 
 func (wd *WDADriver) AppLaunchUnattached(bundleId string) (err error) {
 	log.Info().Str("bundleId", bundleId).Msg("WDADriver.AppLaunchUnattached")
-	// [[FBRoute POST:@"/wda/apps/launchUnattached"].withoutSession respondWithTarget:self action:@selector(handleLaunchUnattachedApp:)]
+	// [[FBRoute POST:@"/wda/apps/launchUnattached"].withoutSession respondWithTarget:self action:@selector(handleLaunchUnattachedApp:)]]
 	data := map[string]interface{}{"bundleId": bundleId}
 	_, err = wd.Session.POST(data, "/wda/apps/launchUnattached")
 	if err != nil {
+		// Check for untrusted certificate error
+		errMsg := err.Error()
+		if strings.Contains(errMsg, "has not been explicitly trusted by the user") ||
+			strings.Contains(errMsg, "invalid code signature") ||
+			strings.Contains(errMsg, "inadequate entitlements") {
+			return errors.Wrap(code.DeviceUntrustedCertError, "App certificate not trusted: "+bundleId)
+		}
 		return errors.Wrap(err, "wda app launchUnattached failed")
 	}
 	return nil