AV Edge Protect filters are designed to support everyday device use without disrupting 4G, 5G, or WiFi connection. They aren't designed as signal-blocking enclosures.The distinction is connectivity versus shielding: calls, navigation, and payments depend on different radio technologies. Understanding those differences gives you a clearer picture of what our filters are designed to do, and where installation and device placement matter.
Key Takeaways
- Our Protect filters use EF Technology, with the aim of supporting digital comfort while maintaining normal device performance.
- Mobile networks, GPS/GNSS and contactless payments use different frequencies and antenna systems. An effect on one doesn't automatically mean an effect on another.
- Our filters are device accessories for people who want support with everyday screen use, digital weariness and focus. They attach to the device rather than enclosing it.
Frequency-Based Support
AV Edge EF Technology adopts a frequency-based approach (not magnets) intended to interact with the body's natural energy field.
For our Protect Filter range, the aim is to modulate signals associated with smartphones, laptops, tablets, and other devices, whilst maintaining their everyday connectivity. The intended target is the potential impact of modern technology EMFs on our body systems, rather than a specified blocking of a mobile-network or satellite-navigation frequency band.
Mobile Signal: Coverage and Antenna Placement Matter
A phone needs a usable radio connection with the mobile network. Anything that changes the signal reaching its antennas can influence calls, data speeds or connection stability.
Different Networks Use Different Bands
UK mobile services operate across several bands, as outlined in Ofcom's mobile spectrum information. Familiar examples include 700 MHz, 800 MHz, 1,800 MHz and frequencies around 3.5 GHz.
A material can behave differently at different frequencies. Its thickness, conductivity and position also matter, and influences whether it will weaken a mobile signal.
Our Protect filters do not operate in the same way as physical shielding cases designed to prevent communication, and are not intended to block signal.
GPS and GNSS: Satellite Reception Has Different Needs

Your navigation app may use mobile data and satellite positioning together, but those connections perform different jobs.
Satellites Provide Positioning Signals
GPS is one satellite navigation system within GNSS, the wider family that also includes Galileo and other constellations.
The European Space Agency's GNSS signal guide describes navigation signals in the upper L band between 1,559 and 1,610 MHz, including GPS L1.
These signals arrive from satellites. Mobile data commonly supplies live traffic, searches and map downloads, although some maps can be stored offline. Strong mobile reception therefore doesn't prove strong satellite reception.
Receiver Position Can Affect Navigation
Satellite signals are weak when they reach a receiver. Vehicle roofs, certain coated windscreens, nearby conductive materials and restricted views of the sky can affect reception.
Built-in navigation may use a separate vehicle antenna. A phone-mounted filter doesn't automatically affect that receiver in the same way it could affect the phone's own antenna system.
AV Edge Protect Filters are not designed to block or interfere with these signals.
Contactless Payments: A Short-Range Connection
Contactless payments use another technology again. NFC, or Near Field Communication, works through close-range coupling between a reader and a card or device.

The NFC Forum's technology explanation identifies its base frequency as 13.56 MHz. That's a different frequency and communication arrangement from cellular networks or satellite navigation.
Nearby metal can interfere with NFC coupling or change how an antenna behaves. The material's position relative to the antenna matters, as does the distance between the device and reader. A successful mobile data connection doesn't establish that NFC will behave unchanged.
A physical bank card has its own antenna. A filter attached to your phone wouldn't necessarily affect a separate card presented directly to a terminal. Keeping that card against a phone, metal wallet or shielding sleeve creates a different arrangement.
For phone payments, the NFC antenna's location varies by model. Payment failures can also involve reader positioning, device authentication or the payment service itself.
A phone can retain mobile reception yet struggle with NFC, because the two functions use different antennas and communication methods.
Our range of AV Edge Protect filters, for phones, laptops, tablets, and other devices are not designed to interfere with contactless payments, including Apple Pay or Google Pay.
Installation and Prices: Choose the Right Device Format
Our Protect filters are designed for attachment to devices, rather than installation across vehicle windows or bodywork. The phone and laptop/tablet products have different formats.
The Mobile Phone Protect Filter costs £20 and includes two ultra-thin rectangular adhesive holograms, enough for one phone. They attach directly to the phone's chassis beneath a standard case, with replacement after 12 months.
Our instructions position them near the phone's antenna areas, generally towards the top and bottom. Antenna layouts vary between models, and those areas may also be close to other wireless components.
The Laptop and Tablet Protect Filter costs £22 and contains one ultra-thin circular adhesive hologram. Placement is directly over the encased antenna, with replacement after 12 months.
Keep camera lenses, charging contacts and ventilation openings clear. In a vehicle, mounting must also preserve your view and leave airbags unobstructed.
Filters and Wristbands: Different Roles in Our Range
Our wider range includes wristbands and accessories for people, dogs and horses. These are different product formats, so wristband descriptions shouldn't be treated as filter specifications.
Our brand history involves more than 15 years of development and thousands of satisfied users. We position the technology around support for adaptation to modern environmental stressors, energy, sleep, focus, stability, balance and recovery.
Customers also report experiences involving daily comfort, sports performance and well-being. Those experiences matter, but user numbers and testimonials don't measure signal strength or establish a health effect.
Frequently Asked Questions
Will a Protect Filter Improve Weak Mobile Reception?
Our filters aren't sold as mobile signal boosters. They're designed to support device use whilst maintaining connectivity, rather than increasing network coverage. Reception still depends on the network, phone, vehicle and surrounding environment.
Does Working Contactless Prove That a Filter Works?
A successful payment shows that the payment system completed that transaction in that arrangement. It doesn't measure EMF exposure, demonstrate frequency modulation or establish a wellness benefit. Connectivity and wellness claims require different forms of evidence.
Are Protect Filters Medical Devices?
No. Our Protect filters are passive, non-medical accessories. They're intended for everyday wellness support and aren't designed to diagnose, treat or cure health conditions. Customer experiences vary, and symptoms that persist deserve advice from a healthcare professional.
Are They Vehicle-Wide Protection Systems?
Our phone and laptop/tablet filters attach to individual devices. They aren't specified as vehicle-wide shielding systems, and their descriptions shouldn't be extended to every transmitter, receiver or electronic system inside a car.
Stay Connected With Clear Expectations
AV Edge Protect filters are designed to support everyday device use whilst preserving connectivity. Each technology has different reception needs, and materials, placement and installation can influence the outcome. Choosing the correct device format and keeping those differences in mind gives you a sound basis for using our filters alongside your everyday technology.

