If your OS is able to auto-detect the splash page, your smartphone or tablet will be able to display push notifications. Many devices are able to automatically guide their users to the splash page, but not all devices can. Each device has its own proprietary detection process that is unique and secret.
For devices that don't auto detect the splash page, you should open your browser and load an HTTP webpage such as http://www.bing.com.
Note that an HTTPS website (such as https://www.google.com) will not receive the redirect since HTTPS was written specifically to avoid redirection for security reasons.