No doubt you have heard of the damage caused by the use of smartphones, the gravity of their radiation and their health impact, which is among the most important of recent studies, as a result of the massive increase in the use of mobile phones worldwide
Mobile phones use electromagnetic radiation within microwave or microwave, and other digital wireless systems, such as data and communication networks, produce similar beams. The World Agency for research on cancer (Iarc) has classified mobile radiation on the iarc scale to Category 2 B (may cause cancer), which means that it may contain a risk of cancer. According to Wikipedia
Various Regulatory bodies have developed "safe" borders for sar measurements. For example, THE FEDERAL TELECOMMUNICATION UNION (Itu) is limiting exposure to radio frequencies to sar 1.60 In Europe the limit is slightly higher, and it is set at 2.00 and 2.00 These numbers are the amount of radiation that the body absorbs and is no different according to damaged body parts.
In the next picture, a report on the most intelligent Smartphone Version: