BlackBerry announced in May that it would bring its BlackBerry Messenger (BBM) platform to iOS and after sending out beta invites to the service in early August, the company has now posted (via TechCrunch) a user guide that suggests the app's launch may be imminent. BBM, which functions similarly to Apple's iMessage, was one of the first proprietary mobile messaging services and remains popular to this day with more than 60 million monthly active users. Leaked screenshot of the Android version of BBMThe BBM user guide details how the service works, the available features, and how to create an account. It also offers a rundown on icons and a troubleshooting section. According to the user guide, the app will support profiles, barcode invites, multi-media chats, emoticons, and group chats. Like other messaging apps, it will function over both Wi-Fi and cellular connections. While BlackBerry originally targeted a summer release for the app, the company has yet to narrow down its projected release timeline. With the debut of the beta earlier this month and the subsequent guide, it appears that the app is ready to launch. Article Link: BlackBerry Messenger User Guides Posted, iOS Launch Coming Soon?