i programming my application with C# , Wp8 and SDK 8. my application can install and run on phone that have Wp7?
Absolutely. You can run your app on a Device running Windows Phone 8 and Windows Phone 8.1 OS. But you can not run your WP8 app on Windows Phone 7 device.
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So my current problem is that I have to develop a windows phone app that should be able to run on windows phone 8.1 and windows phone 10. As I am new to the windows phone world, I would like to know what is the best way to achieve this?
After reading a few entries I have learned that there is visual studio 2015 to develop windows phone 8.1 apps and that windows phone 10 apps are developed as universal apps. Is it possible to also run universal apps on Windows 8.1 that I developed for Windows 10? (I guess there are functionalities new to windows phone 10 that are not available in 8.1)
Thanks to #ShubhamSahu the question is answered.
It is possible to execute/download WP 8.1 Apps on WP 10.
I'm developing a Windows Phone 8.1 app in Visual Studio 2013 Pro on a Windows 7 machine. Obviously, using the emulator is not an option for running it.
Is it possible to deploy/build a Windows Phone 8.1 application to a device (an actual Windows Phone connected via USB) on Windows 7? (I'd find out myself, but I don't have a Windows Phone. My client is willing to purchase one if that will enable us to run it.)
Sure, but you should have developer unlocked device to deploy your application. To unlock your device, you can use Windows Phone Developer Registration tool coming with SDK.
I'm using Windows 7 and don not want to migrate to windows 8. I also want to develop Windows Phone applications. But Windows 8 SDK requires Windows 8. So Windows Phone SDK 7.1 can develop applications for Windows 8 or Windows 8.1 Phones.
You can develop Windows Phone 7.1 apps that will run on Windows Phone 8/8.1 devices. But you'll only be able to use features available in the Windows Phone 7.1 SDK.
You can not develop apps for Windows Phone 8/8.1 using Windows Phone 7.1 SDK. And to dvelop for Windows Phone 8.1/Windows 8.1 you need to have a Windows 8.1 installation . For Windows Phone 8 you need at least Windows 8. So you have to update your OS to do so.
I suggest a dual boot system as the best option, or you can install Windows 8.1 on a virtual Machine and then install Visual Studio 2013 and WP SDK in it. but it is very painful to develop like that and you will need a lot of resources in RAM and processing power. Best way if to go for a dual-boot system.
I want to test an app which is build on 7.1 sdk and want to test it on my nokia lumia 820 which is windows phone 8 device. so how to do this. Zune also not detecting my device.
There is specific requirement to deploy the .xap file to WP8 device, you must have Windows 8 PC then you have to install WP8 SDK that's Application Deployment tool allows you to deploy the .XAP file on WP8 device.
Hope it helps.
Zune is not required for deployment on Windows Phone 8 devices (even for WP7 apps running on WP8).
Visual Studio should detect your device and deploy to it automatically.
EDIT: Visual Studio 2012 and the Windows Phone 8 SDK are required for deploying to WP8 devices.
You can easily deploy it using Application Deployment tool, no need to use Zune, it is for Mango
I have seen there is support for windows phone 7 app on windows phone 8. I have developed some apps on windows phone 7 and I want to run it on windows phone 8 emulator to test my app. Is there any way for doing this?
Yes, just open your Windows Phone 7 Solution in Visual Studio 2012 with Windows Phone 8 SDK installed, select as target Windows Phone 8 emulator and run your app. You can even choose between various screen resolutions.
The minimal system requirements for running Windows Phone 8 emulator are here:
What does it take to run the Windows Phone 8 emulator?
Once you open your WP7 app in VS 2012 with WP SDK 8.0 with target platform for WP8 you can't use this project anymore as WP7 project.
If you want to continue to develop in new environment in VS 2012 you need to use Target platform: WP 7.1
Best regards
You can also use the XAP Deployment tool so that you don't have to open the project in Visual Studio.