The 5G era has arrived, bringing faster network speeds and lower latency. However, sometimes we hope that the mobile phone can be temporarily "disconnected", such as in important meetings, exams, or occasions that require concentration. At this time, mobile phone shielding bags come in handy. So, can mobile phone shielding bags shield 5G signals? Let's explore this question together.
2. Characteristics of 5G signals
To understand whether mobile phone shielding bags can shield 5G signals, we first need to understand the characteristics of 5G signals.
Frequency range
The frequency range used by 5G networks is wider than previous generations of mobile communication technology. It is mainly divided into two frequency bands:
Low frequency band (Sub-6 GHz): The frequency is between 1 GHz and 6 GHz, similar to the frequency of 4G LTE, but it can provide higher speeds and better coverage.
Millimeter wave (mmWave): With frequencies between 24 GHz and 100 GHz, it can provide extremely high network speeds, but has a smaller coverage area and weaker penetration.
Wavelength and penetration
The wavelength of the 5G millimeter wave band is very short, which allows it to transmit more data, but also makes it less penetrating and easily blocked by objects such as walls and glass. This means that in theory, it is more easily blocked by shielding materials.
How does a Faraday bag shield signals?
A Faraday bag uses conductive materials (such as metal fibers or metal foils) to form a closed shielding layer. When electromagnetic waves (such as wireless signals) hit conductive materials, the free electrons in the material rearrange themselves to form an electric field that is opposite to the external electromagnetic field, thereby offsetting the influence of the external electromagnetic field. As a result, the electromagnetic waves cannot penetrate the conductive material and enter the Faraday bag.
Multi-layer shielding
Some high-quality mobile phone shielding bags are designed with multiple layers of conductive materials to enhance the shielding effect. The smaller the gaps between these layers, the better the shielding effect.
Can mobile phone shielding bags shield 5G signals?
So, can mobile phone shielding bags shield 5G signals? The answer is: Yes, but the effect depends on the material and design of the shielding bag.
Shielding of low-band 5G
The frequency range of low-band 5G signals (Sub-6 GHz) and 4G LTE signals is similar, so most well-designed mobile phone shielding bags can effectively shield these signals. As long as the shielding bag can block 4G signals, it can also block low-band 5G signals.
Shielding of millimeter-wave 5G
Due to the high frequency and short wavelength, the millimeter-wave 5G signal has a fast data transmission speed but weak penetration. High-quality mobile phone shielding bags use a high-density metal mesh or multi-layer metal foil design to effectively block millimeter-wave signals. In fact, millimeter-wave signals are more easily blocked by physical obstacles, which makes shielding bags generally better for them.
Conclusion
In general, mobile phone shielding bags can effectively shield 5G signals, including low-band and millimeter-wave signals. But the effect depends on the material, design and closure of the shielding bag. When choosing and using mobile phone shielding bags, paying attention to quality and user reviews is the key to ensuring the shielding effect. Mobile phone shielding bags or cell phone jammer each have their own suitable usage scenarios, and you can buy them according to your needs.