diff --git a/CHANGELOG.md b/CHANGELOG.md
index 373ab7d..a71a0f8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,8 @@
 - [__change__:] `isAvailable` returns false if no enabled print services can be found (Android)
 - [enhancement:] `isAvailable` returns additional list of available print services (Android)
 - [enhancement:] `print` returns bool value to indicate the result
-- [enhancement:] Support `duplex` attribute (Android)
+- [enhancement:] Added missing `duplex` support (Android)
+- [__change__:] `duplex` requires a string (`none`, `long` or `short`)
 
 
 #### Version 0.7.1 (23.04.2015)
diff --git a/src/ios/APPPrinter.m b/src/ios/APPPrinter.m
index b3f10c1..6318ebc 100755
--- a/src/ios/APPPrinter.m
+++ b/src/ios/APPPrinter.m
@@ -117,6 +117,7 @@
     UIPrintInfo* printInfo             = [UIPrintInfo printInfo];
     UIPrintInfoOrientation orientation = UIPrintInfoOrientationPortrait;
     UIPrintInfoOutputType outputType   = UIPrintInfoOutputGeneral;
+    UIPrintInfoDuplex duplexMode       = UIPrintInfoDuplexNone;
 
     if ([[settings objectForKey:@"landscape"] boolValue]) {
         orientation = UIPrintInfoOrientationLandscape;
@@ -126,10 +127,17 @@
         outputType = UIPrintInfoOutputGrayscale;
     }
 
+    if ([[settings objectForKey:@"duplex"] isEqualToString:@"long"]) {
+        duplexMode = UIPrintInfoDuplexLongEdge;
+    } else
+    if ([[settings objectForKey:@"duplex"] isEqualToString:@"short"]) {
+        duplexMode = UIPrintInfoDuplexShortEdge;
+    }
+
     printInfo.outputType  = outputType;
     printInfo.orientation = orientation;
+    printInfo.duplex      = duplexMode;
     printInfo.jobName     = [settings objectForKey:@"name"];
-    printInfo.duplex      = [[settings objectForKey:@"duplex"] boolValue];
 
     controller.printInfo      = printInfo;
     controller.showsPageRange = NO;
diff --git a/www/printer.js b/www/printer.js
index 0d802ab..b3fd318 100755
--- a/www/printer.js
+++ b/www/printer.js
@@ -1,5 +1,5 @@
 /*
-    Copyright 2013-2014 appPlant UG
+    Copyright 2013-2016 appPlant GmbH
 
     Licensed to the Apache Software Foundation (ASF) under one
     or more contributor license agreements.  See the NOTICE file
@@ -21,11 +21,6 @@
 
 var exec = require('cordova/exec');
 
-/**
- * The default document/job name.
- */
-exports.DEFAULT_DOC_NAME = 'unknown';
-
 /**
  * List of all available options with their default value.
  *
@@ -33,9 +28,10 @@ exports.DEFAULT_DOC_NAME = 'unknown';
  */
 exports.getDefaults = function () {
     return {
-        name:      exports.DEFAULT_DOC_NAME,
-        duplex:    true,
+        name:      'unknown',
+        duplex:    'none',
         landscape: false,
+        graystyle: false,
         bounds:    [40, 30, 0, 0]
     };
 };
@@ -87,7 +83,7 @@ exports.print = function (content, options, callback, scope) {
     params = this.mergeWithDefaults(params);
 
     if ([null, undefined, ''].indexOf(params.name) > -1) {
-        params.name = this.DEFAULT_DOC_NAME;
+        params.name = this.getDefaults().name;
     }
 
     exec(fn, null, 'Printer', 'print', [page, params]);
@@ -117,6 +113,10 @@ exports.mergeWithDefaults = function (options) {
         ];
     }
 
+    if (options.duplex && typeof options.duplex == 'boolean') {
+        options.duplex = options.duplex ? 'long' : 'none';
+    }
+
     for (var key in defaults) {
         if (!options.hasOwnProperty(key)) {
             options[key] = defaults[key];