diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index e864550fe457616bbc79f9ad6815b3dbd491634a..0b911e78586e52fd51068a5428c0558713a009a3 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -11,9 +11,7 @@
   <component name="ChangeListManager">
     <list default="true" id="ffce6e62-d498-4e17-b121-42833fbda3f5" name="Default" comment="">
       <change type="MODIFICATION" beforePath="$PROJECT_DIR$/.idea/workspace.xml" afterPath="$PROJECT_DIR$/.idea/workspace.xml" />
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/app/src/main/AndroidManifest.xml" afterPath="$PROJECT_DIR$/app/src/main/AndroidManifest.xml" />
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/app/src/main/res/values/strings.xml" afterPath="$PROJECT_DIR$/app/src/main/res/values/strings.xml" />
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/app/src/main/res/xml/preferences.xml" afterPath="$PROJECT_DIR$/app/src/main/res/xml/preferences.xml" />
+      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/app/src/main/java/info/nightscout/android/medtronic/Medtronic640gActivity.java" afterPath="$PROJECT_DIR$/app/src/main/java/info/nightscout/android/medtronic/Medtronic640gActivity.java" />
     </list>
     <ignored path="Medtronic640gUploader.iws" />
     <ignored path=".idea/workspace.xml" />
@@ -34,11 +32,11 @@
   </component>
   <component name="FileEditorManager">
     <leaf SIDE_TABS_SIZE_LIMIT_KEY="300">
-      <file leaf-file-name="Medtronic640gActivity.java" pinned="false" current-in-tab="false">
+      <file leaf-file-name="Medtronic640gActivity.java" pinned="false" current-in-tab="true">
         <entry file="file://$PROJECT_DIR$/app/src/main/java/info/nightscout/android/medtronic/Medtronic640gActivity.java">
           <provider selected="true" editor-type-id="text-editor">
-            <state vertical-scroll-proportion="-17.88889">
-              <caret line="411" column="114" selection-start-line="411" selection-start-column="114" selection-end-line="411" selection-end-column="114" />
+            <state vertical-scroll-proportion="0.29955947">
+              <caret line="126" column="32" selection-start-line="126" selection-start-column="32" selection-end-line="126" selection-end-column="32" />
               <folding>
                 <element signature="e#15673#15939#0" expanded="true" />
                 <element signature="e#15938#15939#0" expanded="true" />
@@ -69,10 +67,10 @@
           </provider>
         </entry>
       </file>
-      <file leaf-file-name="GetHmacAndKeyActivity.java" pinned="false" current-in-tab="true">
+      <file leaf-file-name="GetHmacAndKeyActivity.java" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/app/src/main/java/info/nightscout/android/medtronic/GetHmacAndKeyActivity.java">
           <provider selected="true" editor-type-id="text-editor">
-            <state vertical-scroll-proportion="0.33259913">
+            <state vertical-scroll-proportion="-5.5925927">
               <caret line="114" column="42" selection-start-line="114" selection-start-column="42" selection-end-line="114" selection-end-column="42" />
               <folding>
                 <element signature="e#4031#4073#0" expanded="true" />
@@ -1775,11 +1773,11 @@
         <option value="$PROJECT_DIR$/app/src/main/java/info/nightscout/android/medtronic/DexcomG4Activity.java" />
         <option value="$PROJECT_DIR$/app/src/main/java/info/nightscout/android/medtronic/LoginActivity.java" />
         <option value="$PROJECT_DIR$/app/src/main/java/info/nightscout/android/medtronic/service/MedtronicCNLService.java" />
-        <option value="$PROJECT_DIR$/app/src/main/java/info/nightscout/android/medtronic/Medtronic640gActivity.java" />
         <option value="$PROJECT_DIR$/app/src/main/java/info/nightscout/android/medtronic/GetHmacAndKeyActivity.java" />
         <option value="$PROJECT_DIR$/app/src/main/AndroidManifest.xml" />
         <option value="$PROJECT_DIR$/app/src/main/res/values/strings.xml" />
         <option value="$PROJECT_DIR$/app/src/main/res/xml/preferences.xml" />
+        <option value="$PROJECT_DIR$/app/src/main/java/info/nightscout/android/medtronic/Medtronic640gActivity.java" />
       </list>
     </option>
   </component>
@@ -2631,13 +2629,6 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/app/src/main/java/info/nightscout/android/medtronic/MedtronicCGMService.java">
-      <provider selected="true" editor-type-id="text-editor">
-        <state vertical-scroll-proportion="0.09653092">
-          <caret line="1373" column="13" selection-start-line="1373" selection-start-column="13" selection-end-line="1373" selection-end-column="13" />
-        </state>
-      </provider>
-    </entry>
     <entry file="file://$PROJECT_DIR$/app/src/main/java/info/nightscout/android/medtronic/data/CNLConfigDbHelper.java">
       <provider selected="true" editor-type-id="text-editor">
         <state vertical-scroll-proportion="0.49019608">
@@ -2796,17 +2787,6 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/app/src/main/java/info/nightscout/android/medtronic/Medtronic640gActivity.java">
-      <provider selected="true" editor-type-id="text-editor">
-        <state vertical-scroll-proportion="-17.88889">
-          <caret line="411" column="114" selection-start-line="411" selection-start-column="114" selection-end-line="411" selection-end-column="114" />
-          <folding>
-            <element signature="e#15673#15939#0" expanded="true" />
-            <element signature="e#15938#15939#0" expanded="true" />
-          </folding>
-        </state>
-      </provider>
-    </entry>
     <entry file="file://$PROJECT_DIR$/app/build/intermediates/exploded-aar/com.android.support/appcompat-v7/21.0.3/res/values/values.xml">
       <provider selected="true" editor-type-id="text-editor">
         <state vertical-scroll-proportion="-1.6699029">
@@ -2851,7 +2831,7 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/app/src/main/java/info/nightscout/android/medtronic/GetHmacAndKeyActivity.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state vertical-scroll-proportion="0.33259913">
+        <state vertical-scroll-proportion="-5.5925927">
           <caret line="114" column="42" selection-start-line="114" selection-start-column="42" selection-end-line="114" selection-end-column="42" />
           <folding>
             <element signature="e#4031#4073#0" expanded="true" />
@@ -2859,5 +2839,24 @@
         </state>
       </provider>
     </entry>
+    <entry file="file://$PROJECT_DIR$/app/src/main/java/info/nightscout/android/medtronic/MedtronicCGMService.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state vertical-scroll-proportion="0.33264032">
+          <caret line="601" column="36" selection-start-line="601" selection-start-column="36" selection-end-line="601" selection-end-column="36" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/app/src/main/java/info/nightscout/android/medtronic/Medtronic640gActivity.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state vertical-scroll-proportion="0.29955947">
+          <caret line="126" column="32" selection-start-line="126" selection-start-column="32" selection-end-line="126" selection-end-column="32" />
+          <folding>
+            <element signature="e#15673#15939#0" expanded="true" />
+            <element signature="e#15938#15939#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
   </component>
 </project>
\ No newline at end of file
diff --git a/app/src/main/java/info/nightscout/android/medtronic/Medtronic640gActivity.java b/app/src/main/java/info/nightscout/android/medtronic/Medtronic640gActivity.java
index e091f418b94c49b6919cde74bba0bfe029dd0752..6b2518b131391dbae89e498f298385185592cfea 100644
--- a/app/src/main/java/info/nightscout/android/medtronic/Medtronic640gActivity.java
+++ b/app/src/main/java/info/nightscout/android/medtronic/Medtronic640gActivity.java
@@ -123,9 +123,9 @@ public class Medtronic640gActivity extends Activity implements OnSharedPreferenc
 
                             DecimalFormat df = null;
                             if (prefs.getBoolean("mmolDecimals", false))
-                                df = new DecimalFormat("#.##");
+                                df = new DecimalFormat("#.00");
                             else
-                                df = new DecimalFormat("#.#");
+                                df = new DecimalFormat("#.0");
                             String bglString = "---";
                             String unitsString = "mg/dL";
                             if (prefs.getBoolean("mmolxl", false)) {