5 Things RIM Needs to Fix in its BlackBerries

Apple may get all the press, but the venerable BlackBerry is untouchable when it comes to sales. Three of the top five best-selling smartphones in the first quarter of the year were BlackBerries, according to research company The NPD Group.

So why aren’t the devices better? Sure, BlackBerry users rely on their physical keyboards to pound out e-mails, as they always have, and Research In Motion’s longstanding support for push notification and corporate mail servers means you’ll never miss an urgent message from the boss.

But even though BlackBerries have been adding gee-whiz features like multimedia playback and touchscreens, the devices still seem like a mishmash of undercooked ideas. Here are five things RIM needs to fix if it wants to maintain its lead.