VIRUS and new generation phones

Interestingly no mobile virus like commwarior found in symbian 3rd edition 0r 5th editions phones,till now.
almost 3-4 years back when S60 phones spread in market virus like commwarior also spread in phone to phone via bluetooth.so most of the people from all catogeries still misunderstanding that bluetooth is a equipment that produce virus.they think that using of bluetooth may harm our handset by infecting virus.
xcept commwarior or cabir, virus never come to your device via bluetooth automatically.
actually when we transfer a file from a device to another device if the device is virus infected there s a huge chance to your handset become infected.if the file you are trying to transfer is virus infected definitly your handset infectd by virus and when you use that file on your handset the virus spread to rest of the data in your handset and also into system files. it may take time.
when you connect your handset to a virus infected computer you definitly infected .also when you using card reader to transfer data from an infected computer to your memory card, surely your handset infectd.
so clean your computer from virus bfor you connect your handset .
there is no other way to prevent virus infections.