Windows Phone OS 7.0 vs OS 7.1

Question

I am creating a new WP7 application in visual studio, and the first thing he asks for is to configure the version of the WP operating system.

I have 2 options, 7.0 and 7.1.

I am trying to make a simple application by implementing push notifications. I see in a tutorial from Microsoft, which is designed for OS 8.0 and 7.1. What does it mean? That it will not work in OS 7.0 if I choose 7.1?

IF I developed it for 7.0, will it work at all, and if so, will it work at 7.1?

Answer 1

7.0 is the very first version of Windows Phone 7 without updates. 7.1 is the internal version number for Windows Phone 7.5 (the code name for this was Mango).

All new phones running Windows Phone 7 - 7.5. Most phones have an update to upgrade from 7.0 to 7.5.

Given that there are very few clean 7.0 phones left, I would compile your application for internal version 7.1, which is a 7.5 external version.

Also, I'm not sure even if the Windows Phone Store even accepts purely 7.0 apps.