diff --git a/gpsrelaysentinel/src/main/res/layout/activity_main.xml b/gpsrelaysentinel/src/main/res/layout/activity_main.xml
index 4a333f2..6c15ec1 100644
--- a/gpsrelaysentinel/src/main/res/layout/activity_main.xml
+++ b/gpsrelaysentinel/src/main/res/layout/activity_main.xml
@@ -19,33 +19,34 @@
 
 	</com.google.android.material.appbar.AppBarLayout>
 
-	<LinearLayout
-		android:orientation="vertical"
+	<ScrollView
 		android:layout_width="match_parent"
 		android:layout_height="0dp"
-		android:layout_weight="1.0"
-		android:gravity="center_vertical|center_horizontal">
+		android:layout_weight="1.0">
 
-		<TextView
-			android:layout_width="wrap_content"
+		<LinearLayout
+			android:orientation="vertical"
+			android:layout_width="match_parent"
 			android:layout_height="wrap_content"
-			android:text="GPSRelaySentinel"
-			android:textAppearance="?android:attr/textAppearanceLarge"/>
+			android:gravity="center_vertical|center_horizontal"
+			android:id="@+id/ll_main">
 
-		<Switch
-			android:id="@+id/switch_service"
-			android:layout_width="wrap_content"
-			android:layout_height="wrap_content"
-			android:text="GPS Service"
-			android:checked="false"/>
+			<TextView
+				android:layout_width="wrap_content"
+				android:layout_height="wrap_content"
+				android:text="GPSRelaySentinel"
+				android:textAppearance="?android:attr/textAppearanceLarge"/>
 
-		<Button
-			android:layout_width="wrap_content"
-			android:layout_height="wrap_content"
-			android:text="Open LibraryActivity"
-			android:onClick="onLibraryActivity"/>
+			<Switch
+				android:id="@+id/switch_service"
+				android:layout_width="wrap_content"
+				android:layout_height="wrap_content"
+				android:text="GPS Service"
+				android:checked="false"/>
 
-	</LinearLayout>
+		</LinearLayout>
+
+	</ScrollView>
 
 	<LinearLayout
 		android:orientation="vertical"