Understanding the Specific Absorption Rate (SAR) for Redmi Note 7: Essential Information for Users

The Specific Absorption Rate (SAR) is a critical metric for assessing the safety of mobile devices with respect to radio frequency (RF) exposure. For the Redmi Note 7, the SAR values have been carefully measured and are provided to ensure compliance with safety standards. This article delves into the details of the SAR values for the Redmi Note 7, their significance, and how to use the device safely.

What is SAR and How Does it Relate to the Redmi Note 7?

The Specific Absorption Rate, or SAR, is the measure of RF energy absorbed by the body when exposed to RF fields. For the Redmi Note 7, the SAR values are:

1.2 W/kg (Watts per kilogram): This is the SAR value for both head and body exposure. These measurements are in line with the recommendations set forth by key regulatory bodies, ensuring that the device complies with safety standards.

It is important to note that while these values represent the highest possible exposure scenarios, the actual exposure experienced by users is usually much lower due to the nature of how devices are typically used.

Key Regulatory Standards and SAR Guidelines

The SAR limits are defined by various regulatory bodies, including the European Union's Council Recommendation 1999/519/EC and IEEE Std C95.1-2005. These standards specify that SAR values should be below certain thresholds to ensure safety:

EC Standard: SAR limit is 2 W/kg, averaged over 10 grams of tissue. IEEE Standard: SAR limit is 1.6 W/kg, averaged over 1 gram of tissue.

The Redmi Note 7 has been tested under various conditions to ensure it meets these standards. During the testing, the device was operated at its highest certified power levels across all tested frequency bands and placed in positions to simulate typical usage scenarios—both against the head and near the body.

Practical Guidelines for RF Exposure Safety

To minimize RF exposure and use the Redmi Note 7 safely, users should:

Use hands-free options such as Bluetooth headphones or other similar accessories. Avoid using additional accessories with metal parts, as they may interfere with the device's performance and safety standards. Understand that not all bands of operation for the Redmi Note 7 are available in every area due to service provider networks. Check the availability of bands in your region.

Here are the specific SAR values for the Redmi Note 7 models M1901F7G and M1901F7H, as detailed by MI Global RF Exposure Rate:

Model M1901F7G

Measurement2 W/kg over 10 g SAR LimitHead: 0.591 W/KgBody: 1.274 W/KgDistance 5 mm Head0.591 W/KgBODY1.274 W/Kg5 mm Body1.6 W/kg over 1 g SAR LimitHead: 1.15 W/kgBODY: 1.17 W/kg10 mm

Model M1901F7H

Measurement2 W/kg over 10 g SAR LimitHead: 0.591 W/KgBody: 1.274 W/KgDistance 5 mm Head0.591 W/KgBODY1.274 W/Kg5 mm Body1.6 W/kg over 1 g SAR LimitHead: 1.19 W/kgBODY: 1.18 W/kg10 mm

These values provide a clear indication of the RF exposure levels for the Redmi Note 7, helping users make informed decisions about their usage and ensuring compliance with safety guidelines.