Twitter opened up its analytics offering to all users back in the summer, giving people a better look at the engagement surrounding any given tweet. This was only for the desktop, however.
Now, some are starting to be able to access the feature on their phones. Specifically, some iPhone users now have it.
On mobile (currently available on Twitter for iPhone), click on one of your Tweets to get to the Tweet detail page, then tap “View Tweet activity.” Make sure you have installed the latest version of Twitter for iPhone.
It's unclear when this might be expanded to additional mobile platforms like Android. Apparently not all iPhone users are getting it, so it might still be rolling out.
Image via Twitter