Yes, sure. Absolutely.
There are differences in tissue and geometry in children's heads. The use of cellphones in children under 20 can result in a fivefold increase in glioma and acoustic neuroma, and exposure in utero and from birth is huge. Exposure concomitant body burden of other substances like lead can make the consequences worse.
The conclusion is vulnerability of children and individuals with highly prevalent and costly illnesses should be a major consideration in the discussion of risks. We need new public standards to go as low as reasonably achievable. There are many precautionary and also simple and practical everyday methods to minimize exposure to radiation that should be aggressively presented to the public in an educational way with particular attention to reducing children's exposure: banning Wi-Fi in day care, preschools, and up to grade 3, turning off Wi-Fi when not being used, and banning marketing of wireless to children.
Thank you.