diff --git a/Libraries/Core/ExceptionsManager.js b/Libraries/Core/ExceptionsManager.js
index 08fe06f72..dfc41cd15 100644
--- a/Libraries/Core/ExceptionsManager.js
+++ b/Libraries/Core/ExceptionsManager.js
@@ -12,6 +12,13 @@
 
 import type {ExtendedError} from 'parseErrorStack';
 
+const INTERNAL_CALLSITES_REGEX = new RegExp(
+  [
+    '/Libraries/Renderer/oss/ReactNativeRenderer-dev\\.js$',
+    '/Libraries/BatchedBridge/MessageQueue\\.js$',
+  ].join('|'),
+);
+
 /**
  * Handles the developer-visible aspect of errors and exceptions
  */
@@ -38,9 +45,12 @@ function reportException(e: ExtendedError, isFatal: boolean) {
       symbolicateStackTrace(stack)
         .then(prettyStack => {
           if (prettyStack) {
+            const stackWithoutInternalCallsites = prettyStack.filter(
+              frame => frame.file.match(INTERNAL_CALLSITES_REGEX) === null,
+            );
             ExceptionsManager.updateExceptionMessage(
               e.message,
-              prettyStack,
+              stackWithoutInternalCallsites,
               currentExceptionID,
             );
           } else {
diff --git a/React/Modules/RCTRedBox.m b/React/Modules/RCTRedBox.m
index d7c13065e..7ed4900d3 100644
--- a/React/Modules/RCTRedBox.m
+++ b/React/Modules/RCTRedBox.m
@@ -134,7 +134,7 @@
 
         CGFloat buttonWidth = self.bounds.size.width / 4;
         CGFloat bottomButtonHeight = self.bounds.size.height - buttonHeight - [self bottomSafeViewHeight];
-    
+
         dismissButton.frame = CGRectMake(0, bottomButtonHeight, buttonWidth, buttonHeight);
         reloadButton.frame = CGRectMake(buttonWidth, bottomButtonHeight, buttonWidth, buttonHeight);
         copyButton.frame = CGRectMake(buttonWidth * 2, bottomButtonHeight, buttonWidth, buttonHeight);
@@ -148,11 +148,11 @@
         [rootView addSubview:copyButton];
         [rootView addSubview:extraButton];
         [rootView addSubview:topBorder];
-        
+
         UIView *bottomSafeView = [UIView new];
         bottomSafeView.backgroundColor = [UIColor colorWithRed:0.1 green:0.1 blue:0.1 alpha:1];
         bottomSafeView.frame = CGRectMake(0, self.bounds.size.height - [self bottomSafeViewHeight], self.bounds.size.width, [self bottomSafeViewHeight]);
-        
+
         [rootView addSubview:bottomSafeView];
     }
     return self;
@@ -176,14 +176,24 @@ RCT_NOT_IMPLEMENTED(- (instancetype)initWithCoder:(NSCoder *)aDecoder)
     [[NSNotificationCenter defaultCenter] removeObserver:self];
 }
 
+- (NSString *)stripAnsi:(NSString *)text
+{
+    NSError *error = nil;
+    NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"\\x1b\\[[0-9;]*m" options:NSRegularExpressionCaseInsensitive error:&error];
+    return [regex stringByReplacingMatchesInString:text options:0 range:NSMakeRange(0, [text length]) withTemplate:@""];
+}
+
 - (void)showErrorMessage:(NSString *)message withStack:(NSArray<RCTJSStackFrame *> *)stack isUpdate:(BOOL)isUpdate
 {
+    // Remove ANSI color codes from the message
+    NSString *messageWithoutAnsi = [self stripAnsi:message];
+
     // Show if this is a new message, or if we're updating the previous message
-    if ((self.hidden && !isUpdate) || (!self.hidden && isUpdate && [_lastErrorMessage isEqualToString:message])) {
+    if ((self.hidden && !isUpdate) || (!self.hidden && isUpdate && [_lastErrorMessage isEqualToString:messageWithoutAnsi])) {
         _lastStackTrace = stack;
         // message is displayed using UILabel, which is unable to render text of
         // unlimited length, so we truncate it
-        _lastErrorMessage = [message substringToIndex:MIN((NSUInteger)10000, message.length)];
+        _lastErrorMessage = [messageWithoutAnsi substringToIndex:MIN((NSUInteger)10000, messageWithoutAnsi.length)];
 
         [_stackTraceTableView reloadData];
 
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/RedBoxDialog.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/RedBoxDialog.java
index 361d27d3c..14c0867bb 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/RedBoxDialog.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/RedBoxDialog.java
@@ -169,7 +169,8 @@ import org.json.JSONObject;
             ? (TextView) convertView
             : (TextView) LayoutInflater.from(parent.getContext())
                 .inflate(R.layout.redbox_item_title, parent, false);
-        title.setText(mTitle);
+        // Remove ANSI color codes from the title
+        title.setText(mTitle.replaceAll("\\x1b\\[[0-9;]*m", ""));
         return title;
       } else {
         if (convertView == null) {