To check the details of radiation emission of any smartphone dial *#07# on the dial pad. You can also check the detailed specifications on the internet for finding the same.
SAR stands for Specific Absorption Rate which is a measure of the amount of radio frequency energy absorbed by the body when the device is used. The maximum allowable emissions level for a phone is 1.6 Watts per Kilogram (1.6 W/kg), according to the Federal Communication Commission. If your phones show that the emission is below the limit, it is safe. The lower the level, the safer the device. However, certain devices don't show the exact value but show that it is below the maximum limit. So, they let user hope it is better for the user.
Radiation Emissions are a major concern of the current world. We all use mobile phones for our convenience. However, the radiation emitted from tour phones are harmful to the body. Not only the radiation from the mobiles that harm us but many kinds of radiation are also emitted from different sources - many are there which we are less concerned about. The cell phone towers emit radio waves and radiation in all areas where we have network coverage. So, it is almost impossible to avoid these radiations completely.
However, it is good to avoid as much as possible or reduce the intensity of the radiation. As the phone continuously emits radiation, it is adviced not to keep the phone close to you when you are sleeping. You may have an alarm, still put is far - thereby you will be forced to walk to it to snooze the alarm in the morning which can help you to get off the sleep if you are too lazy in the morning.