--- a/mobile/android/base/BrowserApp.java
+++ b/mobile/android/base/BrowserApp.java
@@ -630,17 +630,17 @@ public class BrowserApp extends GeckoApp
         IconDirectoryEntry.setMaxBPP(GeckoAppShell.getScreenDepth());
 
         Class<?> mediaManagerClass = getMediaPlayerManager();
         if (mediaManagerClass != null) {
             try {
                 Method init = mediaManagerClass.getMethod("init", Context.class);
                 init.invoke(null, this);
             } catch(Exception ex) {
-                Log.i(LOGTAG, "Error initializing media manager", ex);
+                Log.e(LOGTAG, "Error initializing media manager", ex);
             }
         }
     }
 
     private void registerOnboardingReceiver(Context context) {
         final LocalBroadcastManager lbm = LocalBroadcastManager.getInstance(this);
 
         // Receiver for launching first run start pane on new profile creation.
@@ -660,17 +660,17 @@ public class BrowserApp extends GeckoApp
      }
 
     private Class<?> getMediaPlayerManager() {
         if (AppConstants.MOZ_MEDIA_PLAYER) {
             try {
                 return Class.forName("org.mozilla.gecko.MediaPlayerManager");
             } catch(Exception ex) {
                 // Ignore failures
-                Log.i(LOGTAG, "No native casting support", ex);
+                Log.e(LOGTAG, "No native casting support", ex);
             }
         }
 
         return null;
     }
 
 
     @Override
@@ -882,17 +882,17 @@ public class BrowserApp extends GeckoApp
         if (itemId == R.id.subscribe) {
             // This can be selected from either the browser menu or the contextmenu, depending on the size and version (v11+) of the phone.
             Tab tab = Tabs.getInstance().getSelectedTab();
             if (tab != null && tab.hasFeeds()) {
                 JSONObject args = new JSONObject();
                 try {
                     args.put("tabId", tab.getId());
                 } catch (JSONException e) {
-                    Log.e(LOGTAG, "error building json arguments");
+                    Log.e(LOGTAG, "error building json arguments", e);
                 }
                 GeckoAppShell.sendEventToGecko(GeckoEvent.createBroadcastEvent("Feeds:Subscribe", args.toString()));
                 if (Versions.preHC) {
                     Telemetry.sendUIEvent(TelemetryContract.Event.ACTION, TelemetryContract.Method.CONTEXT_MENU, "subscribe");
                 }
             }
             return true;
         }
@@ -900,17 +900,17 @@ public class BrowserApp extends GeckoApp
         if (itemId == R.id.add_search_engine) {
             // This can be selected from either the browser menu or the contextmenu, depending on the size and version (v11+) of the phone.
             Tab tab = Tabs.getInstance().getSelectedTab();
             if (tab != null && tab.hasOpenSearch()) {
                 JSONObject args = new JSONObject();
                 try {
                     args.put("tabId", tab.getId());
                 } catch (JSONException e) {
-                    Log.e(LOGTAG, "error building json arguments");
+                    Log.e(LOGTAG, "error building json arguments", e);
                     return true;
                 }
                 GeckoAppShell.sendEventToGecko(GeckoEvent.createBroadcastEvent("SearchEngines:Add", args.toString()));
 
                 if (Versions.preHC) {
                     Telemetry.sendUIEvent(TelemetryContract.Event.ACTION, TelemetryContract.Method.CONTEXT_MENU, "add_search_engine");
                 }
             }
@@ -1026,17 +1026,17 @@ public class BrowserApp extends GeckoApp
         }
 
         Class<?> mediaManagerClass = getMediaPlayerManager();
         if (mediaManagerClass != null) {
             try {
                 Method destroy = mediaManagerClass.getMethod("onDestroy",  (Class[]) null);
                 destroy.invoke(null);
             } catch(Exception ex) {
-                Log.i(LOGTAG, "Error destroying media manager", ex);
+                Log.e(LOGTAG, "Error destroying media manager", ex);
             }
         }
 
         super.onDestroy();
     }
 
     @Override
     protected void initializeChrome() {
@@ -1887,28 +1887,25 @@ public class BrowserApp extends GeckoApp
      *
      * @param engine
      *        a search engine instance. Can be null.
      * @param where
      *        where the search was initialized; one of the values in
      *        {@link BrowserHealthRecorder#SEARCH_LOCATIONS}.
      */
     private static void recordSearch(SearchEngine engine, String where) {
-        Log.i(LOGTAG, "Recording search: " +
-                      ((engine == null) ? "null" : engine.name) +
-                      ", " + where);
         try {
             String identifier = (engine == null) ? "other" : engine.getEngineIdentifier();
             JSONObject message = new JSONObject();
             message.put("type", BrowserHealthRecorder.EVENT_SEARCH);
             message.put("location", where);
             message.put("identifier", identifier);
             EventDispatcher.getInstance().dispatchEvent(message, null);
         } catch (Exception e) {
-            Log.w(LOGTAG, "Error recording search.", e);
+            Log.e(LOGTAG, "Error recording search.", e);
         }
     }
 
     /**
      * Store search query in SearchHistoryProvider.
      *
      * @param query
      *        a search query to store. We won't store empty queries.
@@ -2292,17 +2289,16 @@ public class BrowserApp extends GeckoApp
             }
         }
 
         MenuItem item = destination.add(Menu.NONE, info.id, Menu.NONE, info.label);
 
         item.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
             @Override
             public boolean onMenuItemClick(MenuItem item) {
-                Log.i(LOGTAG, "Menu item clicked");
                 GeckoAppShell.sendEventToGecko(GeckoEvent.createBroadcastEvent("Menu:Clicked", Integer.toString(info.id - ADDON_MENU_OFFSET)));
                 return true;
             }
         });
 
         if (info.icon == null) {
             item.setIcon(R.drawable.ic_menu_addons_filler);
         } else {
@@ -2737,17 +2733,17 @@ public class BrowserApp extends GeckoApp
             Tab selectedTab = Tabs.getInstance().getSelectedTab();
             if (selectedTab == null)
                 return true;
             JSONObject args = new JSONObject();
             try {
                 args.put("desktopMode", !item.isChecked());
                 args.put("tabId", selectedTab.getId());
             } catch (JSONException e) {
-                Log.e(LOGTAG, "error building json arguments");
+                Log.e(LOGTAG, "error building json arguments", e);
             }
             GeckoAppShell.sendEventToGecko(GeckoEvent.createBroadcastEvent("DesktopMode:Change", args.toString()));
             return true;
         }
 
         if (itemId == R.id.new_tab) {
             addTab();
             return true;

--- a/mobile/android/base/GeckoApp.java
+++ b/mobile/android/base/GeckoApp.java
@@ -1217,17 +1217,16 @@ public abstract class GeckoApp
         Bundle stateBundle = getIntent().getBundleExtra(EXTRA_STATE_BUNDLE);
         if (stateBundle != null) {
             // Use the state bundle if it was given as an intent extra. This is
             // only intended to be used internally via Robocop, so a boolean
             // is read from a private shared pref to prevent other apps from
             // injecting states.
             final SharedPreferences prefs = getSharedPreferences();
             if (prefs.getBoolean(PREFS_ALLOW_STATE_BUNDLE, false)) {
-                Log.i(LOGTAG, "Restoring state from intent bundle");
                 prefs.edit().remove(PREFS_ALLOW_STATE_BUNDLE).apply();
                 savedInstanceState = stateBundle;
             }
         } else if (savedInstanceState != null) {
             // Bug 896992 - This intent has already been handled; reset the intent.
             setIntent(new Intent(Intent.ACTION_MAIN));
         }
 
@@ -1281,17 +1280,16 @@ public abstract class GeckoApp
 
                 editor.apply();
 
                 // The lifecycle of mHealthRecorder is "shortly after onCreate"
                 // through "onDestroy" -- essentially the same as the lifecycle
                 // of the activity itself.
                 final String profilePath = getProfile().getDir().getAbsolutePath();
                 final EventDispatcher dispatcher = EventDispatcher.getInstance();
-                Log.i(LOGTAG, "Creating HealthRecorder.");
 
                 final String osLocale = Locale.getDefault().toString();
                 String appLocale = localeManager.getAndApplyPersistedLocale(GeckoApp.this);
                 Log.d(LOGTAG, "OS locale is " + osLocale + ", app locale is " + appLocale);
 
                 if (appLocale == null) {
                     appLocale = osLocale;
                 }
@@ -2230,24 +2228,21 @@ public abstract class GeckoApp
                 // Reduce device storage footprint by removing .ttf files from
                 // the res/fonts directory: we no longer need to copy our
                 // bundled fonts out of the APK in order to use them.
                 // See https://bugzilla.mozilla.org/show_bug.cgi?id=878674.
                 File dir = new File("res/fonts");
                 if (dir.exists() && dir.isDirectory()) {
                     for (File file : dir.listFiles()) {
                         if (file.isFile() && file.getName().endsWith(".ttf")) {
-                            Log.i(LOGTAG, "deleting " + file.toString());
                             file.delete();
                         }
                     }
                     if (!dir.delete()) {
                         Log.w(LOGTAG, "unable to delete res/fonts directory (not empty?)");
-                    } else {
-                        Log.i(LOGTAG, "res/fonts directory deleted");
                     }
                 }
             }
 
             // Additional cleanup needed for future versions would go here
 
             if (cleanupVersion != CURRENT_CLEANUP_VERSION) {
                 SharedPreferences.Editor editor = GeckoApp.this.getSharedPreferences().edit();
@@ -2572,17 +2567,16 @@ public abstract class GeckoApp
         });
     }
 
     /**
      * Use BrowserLocaleManager to change our persisted and current locales,
      * and poke HealthRecorder to tell it of our changed state.
      */
     protected void setLocale(final String locale) {
-        Log.d(LOGTAG, "setLocale: " + locale);
         if (locale == null) {
             return;
         }
 
         final String resultant = BrowserLocaleManager.getInstance().setSelectedLocale(this, locale);
         if (resultant == null) {
             return;
         }