A site designed for both mobile and PC usually redirects to appropriate device page ex www.yahoo.co.jp.But firefox does not.I synced with PC.
jscher2000 and kbrosnan , Thanks ,I could solve with Phony.Read this answer in context 0
Additional System Details
- User Agent: Mozilla/5.0 (Windows NT 5.1; rv:19.0) Gecko/20100101 Firefox/19.0
Firefox Mobile sends "Android" in its browser identification. If the site is checking for that, then you should get a mobile page. If the site requires more, e.g., Chrome, Webkit, or some other text, then that's a problem because Firefox doesn't use those terms. With server-based redirection, you cannot see what the site is checking for.
For testing, or to work around sites not knowing about Firefox Mobile, you could try the Phony extension: https://addons.mozilla.org/en-us/mobile/addon/phony/
If the Yahoo sends Firefox for Android the desktop site there is nothing Firefox itself can do. The web site controls this behavior not FIrefox. As jscher mentions you can use the Phony extension to pretend to be other browsers.
jscher2000 and kbrosnan , Thanks ,I could solve with Phony.