What kind of signals will be blocked by mobile phone jammers?

During operation, the cell phone jammer scans from the low end frequency of the forward channel to the high end at a certain speed. This scanning speed will cause garbled interference in the message signal received by the mobile phone, and the mobile phone cannot detect the normal data sent from the base station, so the mobile phone cannot establish a connection with the base station. The mobile phone is shown as searching the network, the mobile phone has no signal, no service system, etc.

According to customer needs, different shields can shield different signals. For example, there are remote control cheating signal jammers, walkie-talkie signal jammers, GPS signal jammers, cell phone signal jammers, WIFI signal jammers, Bluetooth signal jammers, pinhole camera jammers, etc.

handheld interference device

Current mobile phone signal jammers are all full frequency bands. It can shield all 2G, 3G, 4G signals, 2.4G WIFI signals and Bluetooth signals under the three operators of China Mobile, China Unicom and Telecom. Its principle is sent by itself. Frequency interference mobile phones receive frequencies from base stations and wireless routers, thereby achieving the purpose of shielding them. The specific frequency bands are as follows:
1. CDMA frequency band transmission frequency 870-880MHz
2. DCS / PHS frequency band transmission frequency 1800-1920MHz
3. GSM frequency band transmission frequency 925-965MHz
4. TD-SCDMA frequency band transmission frequency 2005-2035MHz
5. WCDMA / CDMA2000 frequency band transmission frequency 2110-2175MHz
6. 2.4G frequency band transmission frequency 2400-2500MHz
7. 4G1 frequency band transmission frequency 2300-2390MHz
8. 4G2 frequency band transmission frequency 2550-2660MHz

The mobile phone signal jammer cuts off GPS / 2G / 3G / 4G / WIFI signals in a large range, so that the device cannot receive satellite signals, cannot establish normal communication with the base station, and can not interfere with and prevent the use of other electronic devices. It is widely used in school examination rooms to prevent cheating, work and rest management in student dormitories, meeting discipline, confidentiality in office and unit meeting rooms, maintaining quiet and solemn religious places and factory workshops to improve production efficiency and reduce Work-related injuries.


1. Multifunctional 4G mode, which can shield 2G, 3G, 4G, 2.4GWIFI Bluetooth and other mobile signals.

2. Using high heat dissipation aluminum alloy shell, good heat dissipation performance, sturdiness and durability, to ensure long-term uninterrupted and reliable operation.

3. High-quality switching power supply, stable frequency, no frequency deviation.

4. The shielding radius is 1 to 30 meters (not a fixed value, depending on the distance between the location and the base station)

5. Only shield the mobile phone signal, does not affect the normal operation of other electronic equipment

6. Ultra-low radiation, safety and environmental protection, no adverse effects on human health.

7. Shielding only the downlink frequency of the transmitting base station will not affect the uplink frequency.

The shielding distance of the jammer is not fixed. It is determined based on the local signal environment. The stronger the mobile phone signal, the shorter the shielding distance; the weaker the signal, the longer the shielding distance. Before buying, be sure to measure the signal strength at the place of use. If you want to block any signal, you can contact us!