Yes, though the research was limited and narrowly-focused. Other environmental factors were not considered, like smoking and age, workplace exposure and sporting activities, for instance. No comparatives to other, everyday activities long-suspected of causing low sperm count and viability were interpreted and included (and it seems there are many variants of suspects).
A large proportion of the info was collated from clinics dealing with fertility problems (confirmation bias?) rather than a broad scope of the male population in general.
Not denying the possible effects of mobile phone use.
From the conclusions of the report...