Facebook has launched its new mobile Share button on Android, iOS and mobile web. The button has been rumored for some time .

Facebook’s Aditya Koolwal says that the Share button “gives people a fast way to share stories with friends from their mobile phones, just as they can from their computers.”

The iOS app is now live in the App Store, and brings along improvements to tagging and News Feed sorting as well:

New Share link to re-post stories from your news feed
Tag your friends in any post, comment or photo
Smileys, hearts and other emoji in messages
To sort your feed, tap the button next to News Feed in the left sidebar

The Android version is live too, with the following features:
Share option on News Feed stories
Ability to create an album from the Photos tab on Timeline
Improvements to photo tagging
Fix for status update failure affecting some users