Windows Phone (WP) Interview Preparation Guide
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Windows Phone (WP) frequently Asked Questions in various Windows Phone job Interviews by interviewer. The set of questions here ensures that you offer a perfect answer posed to you. So get preparation for your new job hunting

82 Windows Phone Questions and Answers:

1 :: Tell me about the Windows Phone?

Windows Phone (known as WP) is a proprietary smartphone operating system developed by Microsoft. It is the successor to Windows Mobile, although it is incompatible with the earlier platform. With Windows Phone, Microsoft created a new user interface, featuring a design language named "Modern" (which was formerly known as "Metro"). Unlike its predecessor, it is primarily aimed at the consumer market rather than the enterprise market. It was first launched in October 2010 with Windows Phone 7.
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2 :: Tell me about Windows Phone User interface?

Windows Phone features a user interface based on Microsoft's Windows Phone design system, codenamed Metro, and was inspired by the user interface in the Zune HD. The home screen, called the "Start screen", is made up of "Live Tiles", which have been the inspiration for the Windows 8 live tiles. Tiles are links to applications, features, functions and individual items (such as contacts, web pages, applications or media items). Users can add, rearrange, or remove tiles. Tiles are dynamic and update in real time – for example, the tile for an email account would display the number of unread messages or a tile could display a live update of the weather. Since Windows Phone 8, live tiles can also be resized to either a small, medium, or large appearance.
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3 :: Tell us about Windows Phone Web browser?

Internet Explorer on Windows Phone allows the user to maintain a list of favorite web pages and tiles linking to web pages on the Start screen. The browser supports up to 6 tabs, which can all load in parallel. Other features include multi-touch gestures, smooth zoom in/out animations, the ability to save pictures that are on web pages, share web pages via email, and support for inline search which allows the user to search for a word or phrase in a web page by typing it. Tabs are synced with Windows 8.1 devices using Internet Explorer 11.
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4 :: What do you know about Windows Phone Media support?

Windows Phone supports WAV, MP3, WMA, AMR, AAC/MP4/M4A/M4B and 3GP/3G2 standards. The video file formats supported on WP include WMV, AVI, MP4/M4V, 3GP/3G2 and MOV (QuickTime) standards. These supported audio and video formats would be dependent on the codecs contained inside them. It has also been previously reported that the DivX and Xvid codecs within the AVI file format are also playable on WP devices.
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5 :: Explain Windows Phone Multitasking?

Multitasking in Windows Phone is invoked through long pressing the "back" arrow, which is present on all Windows Phones. Windows Phone 7 uses a card-based task switcher, whereas later versions of Windows Phone utilize true background multitasking.
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6 :: Tell me about Windows Phone Bluetooth?

Windows Phone supports the following Bluetooth profiles:

Advanced Audio Distribution Profile (A2DP 1.2)
Audio/Video Remote Control Profile (AVRCP 1.3)
Hands Free Profile (HFP 1.5)
Headset Profile (HSP 1.1)
Phone Book Access Profile (PBAP 1.1)
Bluetooth File Transfer (OBEX) (from Windows Phone 7.8)

Windows Phone BTF support is available from Windows Phone 7.8, but is limited to the transferring of pictures, music and videos via a 'Bluetooth Share' app.
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7 :: Explain Windows Phone Hardware?

Windows Phone 7 devices were first produced by Dell, HTC, LG and Samsung. These hardware partners were later joined by Acer, Alcatel, Fujitsu, Toshiba, Nokia, and Chinese OEM ZTE.

Windows Phone 8 devices are currently being produced by HTC, Huawei, Nokia, and Samsung.

At the 2014 Mobile World Congress, Microsoft announced that upcoming Windows Phone 8.1 devices will be manufactured by Gionee, HTC, Huawei, JSR, Karbonn, LG, Lenovo, Longcheer, Micromax, Nokia, Samsung, Xolo, and ZTE. Sony (under the Xperia or Vaio brand) has also stated its intention to produce Windows Phone devices in the near future.
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8 :: Can we control the WebBrowser controls zooom?

No. There is no programatic way to zoom the control. You should include a viewport meta tag to set the initial scale level.
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9 :: How to restart or shutdown my application programmatically?

There is no API to do this. Hitting ‘back’ when there is only one page left on the stack is the way to exit the application. Hitting Start button does not exit, just pauses it
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10 :: How to detect if my application is exiting so I can save state?

You can listen to Application.Exit, but this might be too late most of the time. You should listen for the Pause event and save your state there.
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