Question : Problem: Blackberry curve error 1720 contact rim

Trying to install a blackberry curve. There is a ton of contacts on the device but never synched to a pc.
2 things one how do I ensure that the blackberry contacts do not get wiped and two when I tried to install the device on a xp machine I got error 1720 please contact rim.

Answer : Problem: Blackberry curve error 1720 contact rim

Nope! His contacts will not be lost. My wife uses the same service he does, which is the "BIS" - or "BlackBerry Internet Service". This is one normal consumers typically use.

Using BlackBerry Desktop Manager, you can back your contacts up... which is super important to do in case you lose or damage your phone.