I want to create a website using Drupal, which can be accessed on mobile phones. Can I do it?
I found a google page with useful links. Overview of mobile modules for Drupal http://mobiledrupal.com/content/overview-mobile-modules-drupal
Then, mobile themes and modules are created. Http://drupal.org/project/mobile_theme Adds the ability to select a theme for mobile devices in admin / build / themes / settings, which is used to serve users on mobile devices.
http://drupal.org/project/browscap The Browscap module provides a replacement for the PHP get_browser () function. get_browser () is difficult (or impossible) to configure for most users in general web hosting situations and requires attention to update the underlying data (browsercap.ini). This module avoids the configuration problem by storing data in the database table and the freshness problem by automatically taking the latest data on a weekly basis (if cron.php is launched regularly).
Oh sure. Drupal allows you full control over the generated HTML, so you just need to create a theme optimized for mobile users. You may find some topics that already have support for this, you should look for.