3 ms·Note that this has been a public feature since windows phone 8 was released, two and a half years ago.by jacalata 11y agoNote that this has been a public feature since windows phone 8 was released, two and a half years ago.dagw 11y agoIt came with WP 8.1, so it's only be around for about year. The real difference is that hardly anybody uses WP 8.1, whereas there is a very real chance that Windows 10 will become a popular and widespread OS.jacalata 11y agooops, you're right on the release.