no. blackberry messenger is not free on o2. you must change your tariff to a blackberry bolt on tariff to use blackberry messenger. i currently have a bolt on which costs £5 a month for 500mb of internet and blackberry messanger and blackberry app world.
GiffGaff users are currently unable to use blackberry applications (bbm) but are trying to change this.
Yes, you do need to have a Blackberry in order to use the Blackberry Messenger application but apparently RIM (Research in Motion, the proprietors of Blackberry) might release Blackberry Messenger for iPhone and Android devices as well.
You can use the Blackberry Storm for phone and text. You don't need internet to make it work. On the other hand, if you want to use internet on your Blackberry Storm, you would need to register the device for the special Blackberry Data plan as any regular data plan would not work on Blackberry Storm or any other blackberry Phones.
Yes, BlackBerry devices do require a BlackBerry data plan on Verizon. BlackBerry devices are a Smartphone and they require a BlackBerry data plan no matter what service provider you have. You cannot use them for talking and texting only without Internet or email.
No That is Not possible
Yes You Can :)
NO
Yes, you can. If you only want to use the phone for calling and texting, then it would not be a problem, however, if you want to use data on the phone, then you would have to register the device for a Blackberry Data plan.
You would need to have a blackberry plan if you wanted to use things like BlackBerry internet and messenger etc.
The Blackberry internet service is not an internet provider, so much as it is a way to access the internet or your email though the blackberry phone. You cannot comparer it to other internet providers, as you require an ISP in order to use the Blackberry one. It is more of a gateway product to allow your Blackberry to acess your emails if you are in range of a wireless network.
Before you can use internet on an Blackberry phones, you would need to register the device for the special Blackberry Data plan. Any regular data plan would not work on Blackberry phones.