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Your mobile phone is probably the easiest and highest-impact place to start reducing your EMF exposure — it’s the device you carry closest to your body, most often. We offer three different approaches below: physical shielding, field modification, and going wired entirely.
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From £11.67 per month with PayPal Pay Later
This product has multiple variants. The options may be chosen on the product page
From £11.66 per month with PayPal Pay Later
This product has multiple variants. The options may be chosen on the product page
Modern smartphones emit RF (radio frequency) radiation to send and receive calls, texts, and data — especially when held directly against your head during a call. In 2011, the World Health Organization’s International Agency for Research on Cancer (IARC) classified radiofrequency electromagnetic fields from wireless devices as a Group 2B agent — “possibly carcinogenic to humans.” This means limited evidence exists, not proven causation — worth being precise about that distinction rather than overselling it.
The BlocSock is a fabric case, made in the UK, that covers the front of your phone with shielding material on one side. It’s designed to reduce SAR (Specific Absorption Rate) by 96% while your phone works normally — the shielded side sits between your body and the phone, whether you’re holding it to your head or carrying it in a pocket. Available in Faux Leather or Faux Suede — same protection, different finish.
This works on a different principle to the BlocSock. Rather than physically blocking radiation, it’s designed to modify the electromagnetic field at the source.
It depends on how you use your phone. If you regularly hold calls to your head or carry your phone on your person, the BlocSock’s physical shielding gives a measurable reduction. If you’d rather remove wireless exposure entirely for a specific device, an Ethernet adapter does that. The harmonising sticker works on a different principle — read our full breakdown of how it compares.
The BlocSock and the harmonising sticker are both designed not to interfere with signal, calls, or battery life. An Ethernet adapter replaces WiFi with a wired connection by design, which is the point rather than a limitation.
This varies by phone, signal strength, and how you’re using it. Want to check your specific phone rather than estimate? Our EMF Meters and Detectors let you measure real exposure.
Yes — they’re not mutually exclusive. Many customers use the BlocSock for everyday carrying and calls, and switch to a wired Ethernet connection at a desk for extended data use. We recommend using a sticker in conjunction with a BlocSock/ethernet adapter.
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