Among young people, Blackberry Messenger - known to many as BBM - was very popular.
Plus, with BBM integration available, publishers can make consuming content a truly social experience.
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The girl, who cannot be named for legal reasons, said she had met Rose through BBM.
Investigating officer, Det Con Steve Graves, said there were concerns over the difficulty retrieving BBM messages.
With most mobile phones it is not a problem, but it is with BBM.
BlackBerry said it produced guidance to parents on the safe use of BBM.
However, the popular instant-messaging service Blackberry Messenger - known colloquially as BBM - is absent from the upgrade.
There is also the possible problem that BBM is more popular in the UK than it is elsewhere.
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So have the police found a way to listen in on BBM messages?
Many of those complaining about the crash said on Twitter that they could not live without access to BBM.
Another popular tool, BlackBerry Messenger (BBM to its friends), got a new upgrade.
Plus, I can chat with any of my Android and iPhone friends via WhatsApp so BBM has become less important.
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She also likes its instant-messaging feature, known as BBM, as well as its calendar, which syncs with her work PC.
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With upgrading it into a new experience, think about adding features on BB10 such as video chat, for example, within BBM.
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As for BBM, my contact list was dwindling even back in December 2011 when I first wrote about my BlackBerry loyalty.
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The BBM Voice feature requires a Wi-Fi connection with access to the Internet and may not be available in all markets.
ENGADGET: BBM 7 beta is open now, adds Voice feature for free calls over WiFi
Customers can initiate a BBM Voice call directly, or instantly switch from a BBM text chat to talk, and back again.
ENGADGET: BBM 7 beta is open now, adds Voice feature for free calls over WiFi
Research In Motion (RIM) has added the facility to its Blackberry Messenger (BBM) app, which already offered an alternative to text messages.
BBC: Blackberry introduces free wi-fi calls on BBM chat tool
They can also check other BBM text chats, check email, or navigate to other apps while engaged on a BBM Voice call.
ENGADGET: BBM 7 beta is open now, adds Voice feature for free calls over WiFi
At the same time, RIM will bank on its push e-mail and BBM service revenues to tide over this difficult transition period.
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It compares search volume for Whatsapp (blue), BBM (red) and Viber (yellow).
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While my BBM is no longer a reason that keeps me a BlackBerry user I do have a new reason to remain loyal.
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The trial jury heard Mr Duggan collected the BBM Bruni Model 92 handgun in a shoebox just 15 minutes before he was killed.
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However, users will now be able to use BBM's popular text tool at the same time as they are having a free phone conversation.
BBC: Blackberry introduces free wi-fi calls on BBM chat tool
Comments to the piece show that the very existence of BBM is what drives hardware purchases in that teen and youth market as well.
FORBES: What Research In Motion Should Really Do With The BlackBerry
Still, demand for BlackBerry and its wildly popular BBM service is strong within multiple key markets worldwide, and the number of subscribers continues to increase.
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At the same time, RIM will bank on the push e-mail and BBM service revenues from existing subscribers to tide over this difficult transition period.
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A. McCann, Vice President of BBM and Social Communities at RIM.
ENGADGET: BBM 7 beta is open now, adds Voice feature for free calls over WiFi
Whenever your ideas are too big for text, there's BBM Voice.
ENGADGET: BBM 7 beta is open now, adds Voice feature for free calls over WiFi
Customers can also use BBM Voice over their BlackBerry smartphone's speakerphone.
ENGADGET: BBM 7 beta is open now, adds Voice feature for free calls over WiFi
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