Now the school's Cell Phone Jammer Legal United States is in full frequency band. It can shield all the 2G 3G 4G signals, 2.4G WIFI signals and Bluetooth signals under all the three operators of China Mobile, China Unicom and China Telecom. What is blocked is the phone card installed in the phone, and it has nothing to do with the brand and model of the phone. As long as the mobile phone uses the cards under China Mobile, China Unicom and China Telecom, they will be blocked. Some posts say that after turning off the automatic selection of the mobile phone’s network operator, the manual selection of the network will not be blocked. In fact, this is not correct. cell phone jammer It is shielded for all mobile phone frequencies under the three operators, so no matter how it is switched, it will be shielded, which means that no matter what the mobile phone card is, it is within the shielding range of the mobile phone jammer.
This cannot be avoided by cracking the number and band, because no matter which number or band you use, it is within its shielding range. There is also Bluetooth software that won’t work, because its frequency will also be blocked by Cell Phone Jammer Legal United States . The only way is to install a mobile phone signal amplifier near the place where the mobile phone signal jammer is used to counter it. When the mobile phone signal becomes stronger, the mobile phone jammer will be more difficult to shield.