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Points to consider before submitting an app to the Windows Phone Store

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This article is intended to expose relevant points of guidance for those who want to test and submit applications on Windows Phone store.

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Article Metadata
Keywords: Certification, Test Kit, Requirements
Created: saramgsilva (10 Feb 2013)
Last edited: hamishwillee (17 Jul 2013)



The development of a Windows Phone application is in practice where a professional spends more time, however, nowadays the design of the UI and the test for application submission in the Store are points that need more attention by the professional. The quality of an application is a success factor. What you will learn:

  • Testing XAP using Windows Phone Marketplace Test Kit
  • Tips for Certification
  • Official references for certification requirements
  • An overview from the certification process

Testing XAP using Windows Phone Marketplace Test Kit

After the application development, it must be subjected for testing. The functional tests must be performed to ensure that the features are presented to the user accordingly. However, it should be taken into consideration all the features and requirements that Windows Phone requires.

Suppose that the application is in a state: "OK can be submitted." Being a bit pragmatic, is it really ready to submit? Didn´t you forget something?

In order to confirm that the application is actually completed, use the "Windows Phone Marketplace Test Kit" to ensure that the minimum requirements are achieved. Often is the first filter in the detection of common problems / errors that usually occurs. This kit is included in the SDK, therefore is not necessary additional installation.

In Visual Studio 2012, on the top menu, in "Project" menu, can be found the "Open Store Test Kit" option

“Open Store Test Kit…” from the Project Menu of Visual Studio 2012.

Alternatively, if you select the Windows Phone project (no matter if is a Windows Phone OS 7.1 or Windows Phone OS 8 project), click the right button of the mouse and then you will find the "Open Store Test Kit ..." option. “Open Store Test Kit…”  from the context menu of Visual Studio 2012.

When opening Test Kit, you will realized the following:

Windows Phone Marketplace Test Kit

Application Details, show the XAP's path that will be analyzed:

XAP's path

Important, the XAP file should be in Release mode, since only the applications in Release mode can be submitted.

Qucik shortcut for the compile mode

You have to insert the image that will be displayed in the store as the pictures of the application instance, consider the example of Girl Geek Dinners application:

Configuration for Girl Geek Dinners aplication

The images will be uploaded later in the submission process of the application.

Notice that we put the sample pictures for the various resolutions, as you can see in the following image:

Option for choose the Device Type


1. One recommendation that usually is done, is to create a folder with the name ArtWork, with all the images needed for the application.

Folder with all images that project needs
Please note that the Images folder and Assets must then be included in the project application, as you can see in the following pictures:
Folder with the contents of the project
The project will have the following aspect:
Structure of the project.

2. In “Manifest” file is necessary to define some images that will be included in the XAP. The file is in the folder "Properties" under the name "WMAppManifest.xaml."

“Manifest” file in project

When you open this file, we will have an interface that allows us to set each image, we see the next picture which is the practical case of Girl Geek Dinners application.

Interface of the “Manifest” file

Automated Tests allow to run the tests that will examine the XAP and required images, in automatic way.

Interface initial automated testing

Interface of the Automated testing - example of unsuccessful test

Interface of the Automated testing - example of successful test

For analyze with "Start Windows Phone Application Analysis" is recommend reading the Nokia Wiki Article: Techniques for memory analysis of Windows Phone apps

Manual Tests contains a list of tests that can be done and each one has the steps required to perform the test.

Manual Test

This list focuses on the requirements of the certification process, for this reason should not be ignored!

In conclusion, Windows Phone Marketplace Test Kit has three distinct tests that represent:

  • Aplication Details: show the absolute path to the XAP file that is used for analyze and fields to insert the image that will be displayed in the store and the screenshots from the aplication.
  • Automated Tests: Automatically checks possible errors.
  • Manual Testes: A list of manual tests that can be checked.

And validate:

  • Requirements for certification of the various images (screenshots, the application icons and background image);
  • Capabilities
  • Usage for Back button;
  • Inappropriate use of the API;
  • Memory usage and performance;
  • Unexpected errors;
  • The “Manifest” file

Windows Phone Store Test Kit is a tool from Microsoft, the official article is: MSDN - Windows Phone Store Test Kit .

Tips for Certification

  • The maximum size of the XAP package file is 225 MB;
  • The <Title> element in the WMAppManifest.xml file must contain the application title. The <Title> element must not be empty. An application must include the application name, version information, and technical support contact information that are easily discoverable. Normally is created the About Page for show that information

  • Images mandatory, have specific names and sizes to take in consideration;
  • The app list icons and ‘pin-to-start’ icon should not be default/generalized Windows Phone icons: they should be your personalized icons. The app icons must accomplish with the mandatory dimensions.
  • The app’s screenshots that you submit should not include any part of the emulator – only the app content should be seen clearly. The screenshots must have the required dimensions and should be in non-transparent PNG format. Also note that graphically enhanced screenshots are not accepted.
  • The application must not invoke native code via PInvoke or COM interoperability;
  • XAP file must be in Release mode and cannot contain debugging symbols or output;
  • If the if UltimateResourceFallbackLocation.Satellite is missing the applications certification fails, for solve it, add in AssemblyInfo.cs the following:
[assembly: NeutralResourcesLanguage("pt-PT", UltimateResourceFallbackLocation.Satellite)]

Note: In this case, is used "pt-PT" but is only an example.

  • Application that supports devices with 256mb of memory, will be tested. If the application do not meet the requirements, it will fail in certification process.
  • Go to settings and change the theme from Dark to Light or Light to Dark. Application content, such as text and visual elements, must be visible and legible regardless of the phone theme.

Official references for certification requirements

Is recommend reading the requirements of the certification process, which are divided into the following categories:

Last updates can be found in this article: App certification requirements change history for Windows Phone

An overview from the certification process

This page was last modified on 17 July 2013, at 05:32.
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