How can I directly upload smartphone videos to blog and comments?

Not sure what type of smartphone but here is how I do it with my Iphone with the WordPress app.

You can create a new post and add media to it by tapping the film strip icon and selecting the video you wish to upload. Now it will compress it and upload it to your wordpress install. If you view the post it will add it in a <video> container.

Now you can post it like a normal post and the video will display in the player and not as a link, no youtube needed.