Many people are concerned about the news that the iPhone 12 SAR value exceeds the standard. BTL will briefly analyze the reasons for you.
| Currently, iPhone 12 models signed for sale by France Telecom Orange’s official website have undergone limb SAR testing, and the SAR values of the head/body/limbs are in compliance with laws and regulations. Therefore, from the above point of view, it meets the requirements, so BTL analyzed this possibility from a technical level. Since the 4G LTE opened the frequency band, the number of mobile phone antennas has gradually increased, and the corresponding difficulty of SAR testing has also greatly increased. Therefore, in order to prevent users from being harmed by excessively high SAR values when using mobile phones. A variety of reduce power functions are provided for different usage scenarios to avoid the problem of SAR value failure due to excessive power. Currently, the following methods are mainly used: 1. Proximity sensor: Use the mobile phone to sense the distance to the human body. When the triggering distance is reached, the power is reduced, allowing the mobile phone to work in a state of reduced transmission power. 2. Receiver on/off: Use the receiver to determine whether the phone is using the receiver when answering, so as to determine whether the phone is working normally or with reduced transmit power. 3. Country code: Each country has its own country code for wireless signals. The product will add codes based on the detected country to load different transmit power parameters. There are other ways to perform the power reduction function. If you are interested, please contact BTL to discuss. Nowadays, the functions of mobile phone products are becoming more and more complex, and brands should pay more attention to whether mass products can operate related functions normally. BTL also has Dasy SAR system, cSAR 3D system and ETS 8923 OTA test system, which can assist in rapid and complete testing of batch products. Detect and analyze the SAR value and wireless performance of the product. If you have any questions about related tests, please feel free to discuss.
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