diff --git a/build/toolchain.android.mak b/build/toolchain.android.mak
index ed6762dbf..c22cfd1b3 100644
--- a/build/toolchain.android.mak
+++ b/build/toolchain.android.mak
@@ -34,6 +34,10 @@ CXX = $(NDK_TOOLCHAIN_PATH)/$(NDK_TARGET)$(NDK_VERSION)-clang++
 LD = $(NDK_TOOLCHAIN_PATH)/$(NDK_TARGET)$(NDK_VERSION)-clang++
 
 SFLAGS += -fPIC
+# If MICROPY_NLR_SETJMP is 0, the MicroPython NLR is done by
+# python/src/py/nlrthumb.c and creates code containing relocations, which is not
+# accepted by Android.
+SFLAGS += -DMICROPY_NLR_SETJMP=1
 
 LDFLAGS += -shared
 LDFLAGS += -static-libstdc++
diff --git a/ion/src/simulator/android/src/java/com/numworks/calculator/EpsilonActivity.java b/ion/src/simulator/android/src/java/com/numworks/calculator/EpsilonActivity.java
new file mode 100644
index 000000000..ef056c93e
--- /dev/null
+++ b/ion/src/simulator/android/src/java/com/numworks/calculator/EpsilonActivity.java
@@ -0,0 +1,84 @@
+package com.numworks.calculator;
+
+import java.util.Locale;
+
+import android.app.Activity;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.os.Bundle;
+import android.util.Log;
+
+import com.google.android.gms.analytics.GoogleAnalytics;
+import com.google.android.gms.analytics.Tracker;
+import com.google.android.gms.analytics.HitBuilders;
+
+import org.libsdl.app.SDLActivity;
+
+public class EpsilonActivity extends SDLActivity {
+  private static GoogleAnalytics sAnalytics;
+  private static Tracker sTracker;
+
+  protected String[] getLibraries() {
+    return new String[] {
+      "epsilon"
+    };
+  }
+
+  @Override
+  protected String[] getArguments() {
+    Locale currentLocale = getResources().getConfiguration().locale;
+    String[] arguments = {"--language", currentLocale.getLanguage()};
+    return arguments;
+  }
+
+  public Bitmap retrieveBitmapAsset(String identifier) {
+    Bitmap bitmap = null;
+    try {
+      bitmap = BitmapFactory.decodeStream(
+        this.getResources().getAssets().open(identifier)
+      );
+    } catch (Exception e) {
+      Log.w("LoadTexture", "Coundn't load a file:" + identifier);
+    }
+    return bitmap;
+  }
+
+  public void telemetryInit() {
+    sAnalytics = GoogleAnalytics.getInstance(this);
+    sTracker = sAnalytics.newTracker("UA-93775823-3");
+  }
+
+  public void telemetryScreen(String screenName) {
+    sTracker.setScreenName(screenName);
+    sTracker.send(new HitBuilders.ScreenViewBuilder().build());
+  }
+
+  public void telemetryEvent(String category, String action, String label) {
+    sTracker.send(new HitBuilders.EventBuilder()
+      .setCategory(category)
+      .setAction(action)
+      .setLabel(label)
+      .build()
+    );
+  }
+
+  @Override
+  protected void onCreate(Bundle savedInstanceState) {
+    /* This is done to hide the status bar and the bottom navigation buttons.
+     *
+     * In SDLActivity::onCreate, setWindowStyle(false) is called, which means
+     * the fullscreen mode is put to false. We call again the method here with
+     * true, in order not to modify the external sources.
+     *
+     * TODO: This was not needed for v12 of Epsilon, even though
+     * setWindowStyle(false) was already called in SDLActivity::onCreate. Find
+     * out why and make a proper fix? */
+    super.onCreate(savedInstanceState);
+    if (!mBrokenLibraries) {
+      /* If mBrokenLibraries, SDL is not initialized by onCreate in
+       * SDLActivity.java. */
+      setWindowStyle(true);
+    }
+  }
+
+}
diff --git a/ion/src/simulator/android/src/java/io/github/omega/simulator/OmegaActivity.java b/ion/src/simulator/android/src/java/io/github/omega/simulator/OmegaActivity.java
index 1839e0208..c0b2b8962 100644
--- a/ion/src/simulator/android/src/java/io/github/omega/simulator/OmegaActivity.java
+++ b/ion/src/simulator/android/src/java/io/github/omega/simulator/OmegaActivity.java
@@ -39,4 +39,11 @@ public class OmegaActivity extends SDLActivity {
     }
     return bitmap;
   }
+
+  protected void onCreate(Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    if (!mBrokenLibraries) {
+      setWindowStyle(true);
+    }
+  }
 }