DO:
Always disable your bluetooth and IR when you don't need them.
Use a password to connect with other devices while on bluetooth.
Install Mobile antivirus program and update it regularly.
Remove viruses from your mobile as quickly as possible using antivirus programs, websites, or manually
Format your mobile if you couldn't remove the virus.
Remove your Memory and SIM card before sending it to be fixed or sold.
DON'T:
Don't let your device's bluethooth to be discoverable all the time.
Don't accept bluetooth connection from unknown sources.
Don't open files you've received from unknown devices and delete them at once.
Don't install programs or receive audio and video files if you don't know their source.
Don't download programs, audio and video files from suspicious websites.