diff --git a/android_app/app/app.iml b/android_app/app/app.iml
index f5aa27d0..0c1a36d5 100644
--- a/android_app/app/app.iml
+++ b/android_app/app/app.iml
@@ -84,9 +84,9 @@
     <orderEntry type="jdk" jdkName="Android API 21 Platform" jdkType="Android SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
     <orderEntry type="library" exported="" name="support-annotations-21.0.3" level="project" />
-    <orderEntry type="library" exported="" name="appcompat-v7-20.0.0" level="project" />
     <orderEntry type="library" exported="" name="support-v4-21.0.3" level="project" />
     <orderEntry type="library" exported="" name="hellocharts-library-1.2" level="project" />
+    <orderEntry type="library" exported="" name="appcompat-v7-21.0.0" level="project" />
   </component>
 </module>
 
diff --git a/android_app/app/build.gradle b/android_app/app/build.gradle
index 0b068ef2..b138d104 100644
--- a/android_app/app/build.gradle
+++ b/android_app/app/build.gradle
@@ -20,6 +20,6 @@ android {
 
 dependencies {
     compile 'com.android.support:support-v4:21.0.3'
-    compile 'com.android.support:appcompat-v7:20.0.0'
+    compile 'com.android.support:appcompat-v7:21.0.0'
     compile files('libs/hellocharts-library-1.2.jar')
 }
diff --git a/android_app/app/src/main/AndroidManifest.xml b/android_app/app/src/main/AndroidManifest.xml
index df85c6d5..9278d37d 100644
--- a/android_app/app/src/main/AndroidManifest.xml
+++ b/android_app/app/src/main/AndroidManifest.xml
@@ -4,9 +4,6 @@
     android:versionCode="1"
     android:versionName="1.0" >
 
-    <uses-sdk
-        android:minSdkVersion="16"
-        android:targetSdkVersion="21" />
     <uses-permission android:name="android.permission.BLUETOOTH"/>
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
diff --git a/android_app/app/src/main/res/values/strings.xml b/android_app/app/src/main/res/values/strings.xml
index 5f0fed97..b751a81c 100644
--- a/android_app/app/src/main/res/values/strings.xml
+++ b/android_app/app/src/main/res/values/strings.xml
@@ -64,7 +64,6 @@
     <string name="info_is_not_visible">Is not visible</string>
     <string name="info_bluetooth_enable">Searching for Bluetooth bathroom scale is enabled</string>
     <string name="info_bluetooth_disable">Searching for Bluetooth bathroom scale is disabled</string>
-    <string name="info_new_bluetooth_data">New Bluetooth scale data received!</string>
     <string name="info_enter_value_cm">Enter your height in cm</string>
     <string name="info_enter_user_name">Enter your name</string>
     <string name="info_no_selected_user">No user exist! Please create a new user in the settings</string>