I found there is Skype Mobile for Android. I tried to enter my mobile in the webpage. Yes, they sent sms contains the download link. But the download link is refered to 3 Australia and it said Skype Mobile is not available for my Andorid OS version(1.5). I got old version of Android, 1.5. There is reasonable not supporting that old version OS. But after I read the content of webpage of Skype Mobile for Android. The content sounds specifics for "Verizon", which is a US telco. So, I believe Skype Mobile for Android needs provider support as well. And so far, only "Verizon" supports that.