Use “Google Wireless Transcoder(a.k.a. GWT)” which converts HTML5 pages to one of old mobile (X)HTML formats depends on the target/client mobile device capability.
If you do not like the GWT outputs (converted….etc) , then you need to find an alternatives.
To test/check the output, you can view the output page with a real mobile device, emulator, or Firemobilesimulator.
Reference
- GWT
- FireMobileSimulator
- PHP
- MyMobileWeb
- RoundAbout
- Elixir
- Pronel
- しらぎく
- html2xhtml