Cell Phone Block Caller Id Verizon
In fact, all the Cell Phone Block Caller Id Verizon currently on the market basically means that the device has a strong harsh sound when the device is turned on. The other is that it is difficult to shield the recording of Apple mobile phones. We have tested almost all devices in our company. It is difficult to solve these two problems. You can find mobile phone jammers online. Well, which company produced it and forgot, there is no shortage of such products online. Mobile phone jammers are mainly based on ultrasound. The working frequency is generally around 25hz. What people hear is very harsh and uncomfortable. It was like this after I bought it. The solution is very simple. Use a cotton yarn to cover the device. The noise problem of the transmitter head is solved at once. It is basically quiet, and the power is basically not affected. Other gauze has no effect. You can buy it for a few yuan on Taobao. The effect is very effective. cell phone jammer
The second type is Cell Phone Block Caller Id Verizon , which can only interfere with the recording of some Android phones. When it comes to recording on high-end Apple phones, it is basically useless, because Apple phones have an anti-interference system that can’t be shielded. I also encountered this situation at the beginning. So after several attempts, I got some experience, and straightened the four jamming heads on the mobile phone jammer to form an effect of one plus one greater than two. This has to be tested repeatedly and fixed with glue after the test is successful. At present, they are all ultrasonic recording jammers, which have no effect on resident microphones. Most of Apple mobile phones use this recording format, so you can only choose the low frequency of the mobile phone jammer to interfere with the Apple mobile phone recording, but place the mobile phone jammer to transmit. The head position is also very important. Try back and forth to get the best shielding recording effect.