For questions about the (now deprecated) mobile versions of Stack Exchange sites. For questions about the mobile apps, use the [android-app] and the [ios-app] tags instead. Since the responsive design will soon replace the mobile version, bugs and feature requests will not fixed/ implemented.
For questions about the mobile versions of Stack Exchange sites.
The mobile views have been officially deprecated, and are intended to be removed entirely by the end of 2021.
Until then, you can access the mobile version of a site by clicking the "mobile" link in the page footer.
For questions about the mobile apps, use the android-app and the ios-app tags instead (note that these platforms are no longer supported, and their components are being decommissioned as needed by Stack Exchange).