How To Check SAR Value: What It Is & Why It Matters in 2024
SAR (Specific Absorption Rate) measures the amount of radiofrequency (RF) energy absorbed by the body when using a mobile phone. It is important because high SAR levels may pose health risks if exposure exceeds safety limits.
📌 What Is SAR Value?
- SAR is measured in watts per kilogram (W/kg).
- It indicates how much radiation your body absorbs from a mobile device.
- Governments set SAR limits to ensure safety:
- USA (FCC limit): 1.6 W/kg (measured over 1g of tissue)
- EU (ICNIRP limit): 2.0 W/kg (measured over 10g of tissue)
📋 How to Check SAR Value of Your Phone
1️⃣ Check SAR Value Using USSD Code (Works on Most Phones)
📲 Dial: *#07#
on your phone.
- If supported, it will display the SAR values for head & body.
- If not, it may redirect you to your phone’s regulatory information page.
2️⃣ Check in Your Phone’s Settings
📱 Steps (Varies by Brand):
- Go to "Settings"
- Search for "SAR" or "About Phone"
- Tap on "Regulatory Information" to find SAR values
3️⃣ Check SAR on the Manufacturer’s Website
Most smartphone brands list SAR values on their official websites.
- Visit the official website of your phone brand (e.g., Samsung, Apple, Xiaomi).
- Search for "SAR value + [Your Phone Model]".
🔗 Example: Apple SAR values page → https://www.apple.com/legal/rfexposure/
4️⃣ Check SAR Value on Official Regulatory Websites
Many countries have online databases to check SAR values:
- FCC (USA) → https://www.fcc.gov/oet/ea/fccid
- ICNIRP (EU Guidelines) → https://www.icnirp.org/
✅ How to Use FCC ID Search:
- Find your phone’s FCC ID (usually in "About Phone" or on the device box).
- Enter the FCC ID on the FCC website to check its SAR value.
📌 Why Does SAR Value Matter?
Although no conclusive evidence proves that SAR affects health, excessive exposure to radiation could have potential risks.
⚠️ High SAR Risks (Debated)
🔴 May cause heat-related tissue damage
🔴 Possible long-term health concerns (still under study)
🔴 Could lead to headaches or discomfort after long usage
✅ How to Reduce SAR Exposure?
✔️ Use wired or Bluetooth earphones instead of placing the phone directly on your ear.
✔️ Enable speakerphone mode during calls.
✔️ Keep the phone away from your body (don’t carry it in your pocket for long).
✔️ Use your phone in areas with strong signals (low signal = higher radiation).
✔️ Avoid long calls or switch sides to minimize exposure.
📌 Summary
- SAR value indicates radiation absorption from mobile devices.
- You can check SAR using
*#07#
, phone settings, or official websites. - Lower SAR is better, but exposure can be reduced with simple precautions.
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