My roommate just got a new Bold 9700, so she gave her old BB away. I got Bold 9000, her sisters got BB Curve & BB Pearl.
All 3 used BB by my roommate (Bold9000, curve, pearl) can't add My roommate (new PIN Bold 9700) on messenger & anyone that used to be on her old messenger contact. We tried to add with email & PIN, both does not work.
At the risk of stating the obvious, has she tried deregistering the phones from her carrier, otherwise the original PIN/ IMEI is still registered to her even if the handset is unlocked