There are a lot of scientific studies which suggest that excessive EMF radiation can be harmful to a body. These studies mostly revolve around heating effects.

There are a lot of scientific studies which suggest that excessive EMF radiation can be harmful to a body. These studies mostly revolve around heating effects. But these studies were done when phone were used excessively for calls, which is probably not the case today. EMF radiation is one of those areas which probably need much more research. Simple answer, we're not sure.