I am not sure that Nokia 6555 play online 3gp or YouTube file as I was told that Nokia 6555 play online 3gp or YouTube file but when I tried to play online 3gp or YouTube file, it was not working. I searched on web and acknowledged that adobe flashlight is necessary for it but when I downloaded it from web it’s with .sis file extension which does not support with Nokia 6555. What should I do, can anyone suggest me.