diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 2e696f9..75bf2a8 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -27,8 +27,9 @@
         android:layout_gravity="bottom|end"
         android:layout_marginEnd="@dimen/fab_margin"
         android:layout_marginBottom="16dp"
-        app:srcCompat="@android:drawable/ic_dialog_email" />
+        app:srcCompat="@drawable/ic_settings" />
 
-    <include layout="@layout/content_main" />
+    <include android:id="@+id/content"
+        layout="@layout/content_main" />
 
 </androidx.coordinatorlayout.widget.CoordinatorLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/content_main.xml b/app/src/main/res/layout/content_main.xml
index 370a3da..d263929 100644
--- a/app/src/main/res/layout/content_main.xml
+++ b/app/src/main/res/layout/content_main.xml
@@ -1,12 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     app:layout_behavior="@string/appbar_scrolling_view_behavior">
 
     <TextView
-        android:id="@+id/bloodPressureValue"
+        android:id="@+id/tvValue"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="Waiting for measurement..."
@@ -16,4 +17,16 @@
         app:layout_constraintLeft_toLeftOf="parent"
         app:layout_constraintRight_toRightOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
+
+    <TextView
+        android:id="@+id/tvDevice"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:text="Hello World"
+        android:textAppearance="@style/TextAppearance.AppCompat.Medium"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file