Cabir is a worm on SymbOS. if the phone is infected Cabir, the message proof "Caribe" is displayed on phone.
That worm attempts to spread other areas from phones while using a Bluetooth signals. the worm can replicated on Bluetooth enabled using a Series 60 phone. Older phones would keep on display popups.
This virus was very popular at it's time, and is commonly used on most viruses like Bootton and variants of other viruses.
Mabir is a variant of Cabir, capable spread via MMS (not bluetooth), it copies itself as a .sis file over cellular networks, it can affect users by 10m range.