Recently I have just discovered that a certain amount of the mobile phone frequency can be absorbed by human tissues.
For example, this is the SAR info of iPhone 4s:
Head: 1.180 W/kg 1 g Body: 0.491 W/kg 1g Hotspot: 0.491 W/kg 1 g
so hotspot means a hot spot on human body right?
Then question is:
What are hot spots on human body?