I think that some radiation is still being emitted from the mobile phone, and since I think there is no safe level of EMR radiation than this is still bad.
In addition this kind of solutions can, at the end, encourage people to use their mobile phones, and by that will eventually increase the EMR levels that the public is exposed to both from the antenna and the mobile phone.
There is no magic solution for this issue. I guess that this green antenna can be part of a wider solution that will lower the radiation levels that the public is exposed to both from the mobile phone and from the antennas.
The first step is to admit that we have a problem, then try to reduce the usage, then try to create a safer solution.