When purchasing a new mobile phone in India, you may have come across the term “SAR value.” But what exactly does it mean? SAR, or Specific Absorption Rate, is a measure of the rate at which electromagnetic energy is absorbed by the human body when exposed to a radio frequency (RF) electromagnetic field. In simpler terms, SAR value indicates the amount of radiation emitted by a mobile phone that can potentially be absorbed by the human body.
The SAR value of a mobile phone is expressed in units of watts per kilogram (W/kg) and is determined through rigorous testing methods. To ensure the safety of consumers, the Indian government, under the Department of Telecommunications (DoT), has set a maximum SAR value limit of 1.6 W/kg averaged over 1 gram of tissue. This means that any mobile phone sold in India must comply with this SAR limit to protect users from excessive radiation exposure.
1. How is SAR value measured?
SAR value is measured by simulating typical usage conditions of a mobile phone and measuring the energy absorbed by a body made of liquid similar to human tissues. This is done using specialized testing equipment and protocols.
2. Why is SAR value important?
SAR value is important because it helps users make informed decisions when purchasing a mobile phone. By opting for a device with a lower SAR value, users can minimize their exposure to radiofrequency radiation.
3. Is a lower SAR value always better?
Not necessarily. A lower SAR value indicates lower radiation exposure, but it does not imply that the mobile phone is superior in terms of its features, performance, or quality.
4. Where can I find the SAR value of a phone?
The SAR value of a mobile phone is usually mentioned in its user manual or on the manufacturer’s website. It is also sometimes displayed on the phone’s packaging or in the device settings.
5. Which SAR value is considered safe?
In India, a SAR value of 1.6 W/kg averaged over 1 gram of tissue is considered safe.
6. Can a high SAR value cause health issues?
While there is ongoing debate and research regarding the long-term health effects of mobile phone radiation, the SAR value limit in India ensures that mobile phones meet specific safety standards.
7. Do all mobile phones sold in India comply with the SAR limit?
Yes, all mobile phones sold in India must comply with the SAR limit set by the Department of Telecommunications.
8. Does using a mobile phone with a high SAR value cause immediate harm?
The SAR value accounts for average usage conditions, so using a mobile phone with a higher SAR value does not necessarily cause immediate harm. However, it is advisable to limit exposure to RF radiation as a precautionary measure.
9. Can I compare SAR values of different mobile phones?
Yes, you can compare the SAR values of different mobile phones to determine which device emits lower levels of radiation. Lower SAR values indicate lower potential exposure.
10. Are all body parts equally affected by SAR value?
No, different body parts absorb radiation differently, and the SAR value takes this into account. It measures the energy absorbed by a body made of liquid similar to human tissues.
11. Does using a hands-free device reduce radiation exposure?
Yes, using a hands-free device, such as earphones or Bluetooth headsets, can reduce radiation exposure by keeping the mobile phone away from the body.
12. Is a mobile phone with a low SAR value always safe?
While a mobile phone with a low SAR value is considered safer in terms of radiation exposure, it is still important to follow general guidelines for safe mobile phone usage, such as maintaining a safe distance and limiting screen time.
Understanding SAR value is crucial in making an informed decision while purchasing a mobile phone. By ensuring that the device you choose complies with the SAR limit set by the Indian government, you can use your phone with confidence while minimizing potential radiation exposure.