Please provide a reference for that 1.4W/kg figure. 4.5kg human head would need 6.3W to see 1.4W/kg. A cell phone such as a pixel 6 is 2W and that power isn't all pointed directly at the head.
I've found a FCC limit of 1.6W/kg. That's a limit, not what is actually experienced.
That's in the same order of magnitude as these as these NIH results. Perhaps if you need to use a mobile device for most of your waking hours try to keep it away from your head. Otherwise it's probably not a concern.
I've found a FCC limit of 1.6W/kg. That's a limit, not what is actually experienced.
Ok, so here is a list of mobile device figures: https://emfadvice.com/sar-ratings-radiation-levels-smartphon...
Highest listed is One plus 7t Pro at 1.394W/kg.
That's in the same order of magnitude as these as these NIH results. Perhaps if you need to use a mobile device for most of your waking hours try to keep it away from your head. Otherwise it's probably not a concern.