We get it, your old BlackBerry smartphone isn't getting any newer, but thanks to today's Twitter update, it'll at least be a bit more useful. Most importantly, Twitter 4.1 can now provide notifications whenever you gain new followers, or whenever someone retweets or favorites one of your tweets. The update also adds swiping panels in the bio banner and makes it easier for first time users to sign up. Naturally, the software lacks some of the niceties that you'll find in the BlackBerry 10 version, but that's no reason to pass over the improvements. Twitter 4.1 can be found in BlackBerry World, and is supported by BlackBerry 5 OS and above.