It is currently not possible for some *.wikimedia.org domains to be accessed by mobile devices, since they are automatically redirected to *.m.wikimedia.org, which does not exist (and consequently, no options are provided to avoid this redirect).
These include, but are not limited to, the WMUK wiki (uk.wikimedia.org), the WMPL wiki (pl.wikimedia.org), the Wikimedia internal wiki (internal.wikimedia.org), the FDC wiki (fdc.wikimedia.org), etc.
Possible solutions would either be to stop redirecting mobile devices to *.m.wikimedia.org; or to set up mobile versions of the affected websites.
Version: wmf-deployment
Severity: major