<P> Registered Windows Phone and Xbox Live developers can submit and manage their third party applications for the platforms through the App Hub web applications . The App Hub provides development tools and support for third - party application developers . The submitted applications undergo an approval process for verifications and validations to check if they qualify the applications standardization criteria set by Microsoft . The cost of the applications that are approved is up to the developer, but Microsoft will take 20% of the revenue (the other 80% goes to the developer). Microsoft will only pay developers once they reach a set sales figure, and will withhold 30% tax from non-US developers, unless they first register with the United States Government's Internal Revenue Service . Microsoft only pays developers from a list of thirty countries . A yearly fee is also payable for developers wishing to submit apps . </P> <P> In order to get an application to appear in the Windows Phone Store, the application must be submitted to Microsoft for approval . Microsoft has outlined the content that it will not allow in the applications, which includes content that, among other things, advocates discrimination or hate, promotes usage of drugs, alcohol or tobacco, or includes sexually suggestive material . </P> <P> Windows Phone 7 devices were first produced by HTC, LG and Samsung . These hardware partners were later joined by Acer, Alcatel, Fujitsu, Toshiba, Nokia, and Chinese OEM ZTE . </P> <P> Windows Phone 8 devices were being produced by HTC, Huawei, Nokia, and Samsung . </P>

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