Along the whole cell phones are dangerous/not dangerous debate shebang, we tend to forget that there is this metric called the Specific Absorption Rate (SAR) rating, and all of the phones sold in the US have to keep it on the down low, with the FCC cutoff standing at 1.6w/kg. Thus, the episodic scares about cell phones frying your brains out are usually just that.
Nevertheless, everyone's body gets affected by radio emissions differently, and everybody talks for different lengths of time on the phone, that is why it is somewhat intriguing to know which phone amongst the current popular ones in the US has the lowest Head SAR rating. Well, according to our database of phone specs, it is the Galaxy S7 edge, just like the S6 edge before it was the best in that respect, and still is.
The S7 edge has an exact Head SAR value of only 0.264W/kg, which is pretty amazing. Next in line is the Asus ZenFone 3 at 0.278W/kg, then the Galaxy A5 with 0.290W/kg, and the Moto Z with 0.304W/kg. The iPhone 7 and 7 Plus clock in at 1.38W/kg and 1.24W/kg, respectively, while with 1.5W/kg the honor 8 is encroaching on the FCC threshold, but is still within the safe limits.