Reply #10: It might be good to read the announcement.

[DLnyc]

Of course, there is no such announcement currently listed at the WHO site.

However, an older announcement, from May of 2010, includes these two paragraphs:

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A retrospective case-control study on adults, INTERPHONE, coordinated by the International Agency for Research on Cancer (IARC), was designed to determine whether there are links between use of mobile phones and head and neck cancers in adults. The international pooled analysis of data gathered from 13 participating countries found no increased risk of glioma or meningioma with mobile phone use of more than 10 years. There are some indications of an increased risk of glioma for those who reported the highest 10% of cumulative hours of cell phone use, although there was no consistent trend of increasing risk with greater duration of use. Researchers concluded that biases and errors limit the strength of these conclusions and prevent a causal interpretation.

While an increased risk of brain tumors is not established from INTERPHONE data, the increasing use of mobile phones and the lack of data for mobile phone use over time periods longer than 15 years warrant further research of mobile phone use and brain cancer risk. In particular, with the recent popularity of mobile phone use among younger people, and therefore a potentially longer lifetime of exposure, WHO has promoted further research on this group. Several studies investigating potential health effects in children and adolescents are underway.
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I don't know what "completely inconclusive" is supposed to mean, any more that what could possibly be "completely conclusive".

The old study showed some indication that there may be a connection between heavy use and risk of glioma, but the study was inconclusive. This would warrant further study. Preumably further study has been done and this is, presumably, what today's announcement is about.

It "might" "possibly" be good to read the actual announcement before passing judgement on the evidence, IMHO. Particularly if one wants to represent oneself as an objective, scientific sort of person.