Good question. Alas, the normal antivirus programs for PC's don't work for phones.
http://www.google.com/search?hl=en&q=antivirus+phone shows some protection programs specifically designed for ones. Most phones don't run Windows (although some have a versions called Windows CE), and different makers use different OS'es in stead of Windows, so your choice has to be specifically suited for Sony Ericsson phones. I didn't look at the results, but it's quite possible you find something.
It would be interesting to hear your experiences, so please keep us informed.
Is it possible to connect a cell phone to a PC and then scan it with antivirus and antispyware programs?
My husband and I both have Sony Ericsson K550i and I'm kinda worried about security.
Especially about my husband: he uses Bluetooth to exchange pictures and ringtones with his friends.
He laughed at me when I told him to be careful, but later he heard that his friend's phone got messed up with a virus, so he's now afraid too.
For me, I never used Bluetooth at all, but I regularly use Gmail app on my cell phone.
So, my questions are:
Is there a real reason to be afraid?
What to do to make us safe?