diff --git a/React/Base/RCTLog.h b/React/Base/RCTLog.h
index 3d7670933..28a615af8 100644
--- a/React/Base/RCTLog.h
+++ b/React/Base/RCTLog.h
@@ -29,6 +29,7 @@
  * own code.
  */
 #define RCTLog(...) _RCTLog(RCTLogLevelInfo, __VA_ARGS__)
+#define RCTLogTrace(...) _RCTLog(RCTLogLevelTrace, __VA_ARGS__)
 #define RCTLogInfo(...) _RCTLog(RCTLogLevelInfo, __VA_ARGS__)
 #define RCTLogWarn(...) _RCTLog(RCTLogLevelWarning, __VA_ARGS__)
 #define RCTLogError(...) _RCTLog(RCTLogLevelError, __VA_ARGS__)
@@ -37,6 +38,7 @@
  * An enum representing the severity of the log message.
  */
 typedef NS_ENUM(NSInteger, RCTLogLevel) {
+  RCTLogLevelTrace = 0,
   RCTLogLevelInfo = 1,
   RCTLogLevelWarning = 2,
   RCTLogLevelError = 3,
diff --git a/React/Base/RCTLog.m b/React/Base/RCTLog.m
index b939bf8ad..d6bf84590 100644
--- a/React/Base/RCTLog.m
+++ b/React/Base/RCTLog.m
@@ -26,10 +26,11 @@
 static NSString *const RCTLogFunctionStack = @"RCTLogFunctionStack";
 
 const char *RCTLogLevels[] = {
+  "trace",
   "info",
   "warn",
   "error",
-  "mustfix"
+  "fatal",
 };
 
 #if RCT_DEBUG
@@ -65,6 +66,9 @@ RCTLogFunction RCTDefaultLogFunction = ^(
 
   int aslLevel;
   switch(level) {
+    case RCTLogLevelTrace:
+      aslLevel = ASL_LEVEL_DEBUG;
+      break;
     case RCTLogLevelInfo:
       aslLevel = ASL_LEVEL_NOTICE;
       break;
@@ -210,9 +214,8 @@ void _RCTLogInternal(
       logFunction(level, fileName ? @(fileName) : nil, (lineNumber >= 0) ? @(lineNumber) : nil, message);
     }
 
-#if RCT_DEBUG // Red box is only available in debug mode
-
-    // Log to red box
+#if RCT_DEBUG
+    // Log to red box in debug mode.
     if ([UIApplication sharedApplication] && level >= RCTLOG_REDBOX_LEVEL) {
       NSArray<NSString *> *stackSymbols = [NSThread callStackSymbols];
       NSMutableArray<NSDictionary *> *stack =
@@ -238,9 +241,7 @@ void _RCTLogInternal(
     }
 
     // Log to JS executor
-    [[RCTBridge currentBridge] logMessage:message level:level ? @(RCTLogLevels[level - 1]) : @"info"];
-
+    [[RCTBridge currentBridge] logMessage:message level:level ? @(RCTLogLevels[level]) : @"info"];
 #endif
-
   }
 }
diff --git a/packager/react-packager/src/Resolver/polyfills/console.js b/packager/react-packager/src/Resolver/polyfills/console.js
index b6f20c761..e08e8ef7c 100644
--- a/packager/react-packager/src/Resolver/polyfills/console.js
+++ b/packager/react-packager/src/Resolver/polyfills/console.js
@@ -360,10 +360,9 @@
   var OBJECT_COLUMN_NAME = '(index)';
   var LOG_LEVELS = {
     trace: 0,
-    log: 1,
-    info: 2,
-    warn: 3,
-    error: 4
+    info: 1,
+    warn: 2,
+    error: 3
   };
 
   function setupConsole(global) {
@@ -407,7 +406,7 @@
         }
       }
       if (rows.length === 0) {
-        global.nativeLoggingHook('', LOG_LEVELS.log);
+        global.nativeLoggingHook('', LOG_LEVELS.info);
         return;
       }
 
@@ -453,13 +452,13 @@
       // Native logging hook adds "RCTLog >" at the front of every
       // logged string, which would shift the header and screw up
       // the table
-      global.nativeLoggingHook('\n' + table.join('\n'), LOG_LEVELS.log);
+      global.nativeLoggingHook('\n' + table.join('\n'), LOG_LEVELS.info);
     }
 
     global.console = {
       error: getNativeLogFunction(LOG_LEVELS.error),
       info: getNativeLogFunction(LOG_LEVELS.info),
-      log: getNativeLogFunction(LOG_LEVELS.log),
+      log: getNativeLogFunction(LOG_LEVELS.info),
       warn: getNativeLogFunction(LOG_LEVELS.warn),
       trace: getNativeLogFunction(LOG_LEVELS.trace),
       table: consoleTablePolyfill