Today, smartphones have come a long way. Smartphones now come with excellent cameras, powerful hardware, better display and great battery life. But now along with these features, people are looking for phones with higher Screen Refresh Rates and Touch Sampling Rate. Both Screen Refresh Rate and Touch Sampling Rate are measured in Hertz(Hz) and are equally important to enhance user experience. But the importance of touch sampling rate is not hyped like the refresh rate. Screen Refresh Rate Screen refresh rate means the maximum number of times the screen/display refreshes in one second. If the screen refresh rate is higher then more frames appear in one second resulting in smoother transitions, animations while navigating through the apps and also we’ll get a smoother scrolling experience. We have phones that have 60Hz, 90Hz, 120Hz, 144Hz refresh rate displays. Generally, phones spore a 60Hz display meaning that the display refreshes 60 times per sec...
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 ...