If you want, you dont really need them but it is good to have them
You need to give somebody your PIN, located in your blackberry messenger profile. once they accept you, they are a contact, or vice versa
no more than 1000
no you don't need credit to send messages on blackberry messenger
u need a wire 4 that
No
you need to download blackberry app world from the internet of your phone. Once you've downloaded it, you need to download blackberry messenger (if you don't have it yet on your device). Then the app world will automatically be informing you about the upgrades of any thing you download from there, inculding blackberry messenger.
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.
firstly you upload and store blackberry app world on your blackberry which can be downloaded on your phone with the internet . then you type in blackberry messenger and it will give you options , choose the one with "free" beneath it and then it'll start installing. Afterwards it'll automatically be stored ito your phone . you'd need to inform the network your on and they'll update your messenger so that it'll work and be able to useful. you can add your contacts afterwards. i hope this helped :D x
no, blackberry mail is for e-mails, blackberry messenger is instant messaging
unfortunately Blackberry Messenger is no available on any other phones except blackberry's.
The BlackBerry Bold should be able to use BlackBerry Messenger (BBM). It's for BlackBerry OS 5 or newer.
blackberry messenger is a Instant messaging system you can do a lot more than texting alows you to do for blackberry to blackberry only.