TechnHigh

Smartphone Radiation  is the amount of energy that’s been absorbed by our body from the electromagnetic waves that our phone is firing. It is measured in terms of  SAR  (Specific Absorption Rate). SAR  is the rate at which energy is absorbed by the human body when exposed to radiation. It is defined as the power absorbed per mass of tissue and has a unit of W/k g . Let’s keep it simple. Every phone emits a certain amount of radiation and SAR is the measure of that radiation. SAR Limit: In India and the USA, the SAR limit for mobile phones is 1.6 W/kg averaged over 1 gram of tissue. But in Europe, they have a SAR limit of 2.0 W/kg. A phone with a higher SAR value(more than 1.6 W/kg) is not allowed to be sold in the market. Tests for SAR: Tests for SAR will are conducted using standard operating positions with the phone transmitting at its highest certified power level in all tested frequency bands. Then the SAR values for head and body will be ...

What is Voice over Wi-Fi? Voice over Wi-Fi (VoWi-Fi) uses   IEEE 802.11 wireless LANs   (WLANs) to transport Voice over IP (VoIP) traffic. This is counter to its alternatives, predominantly   Voice over LTE (VoLTE). VoLTE   is a way to route voice traffic over the 4G LTE networks carriers use to transmit data. Last year,   some  Indian Telecom companies launched VoWi-Fi   services that largely went unnoticed. This service aimed at customers' struggling with connection quality and call drops.   While Voice over LTE (VoLTE) was made famous by Reliance Jio for high definition calls   with rich audio quality, looking at heavy traffic and poor connection ranges almost all major telecom companies rolled out Voice over Wi-Fi   feature to help out   users at places where signal strength   is   weak   and those suffering from call drops. How does Voice over Wi-Fi   work? To understand VoWiFi, it is i...