Can You Block Outgoing Calls On A Cell Phone Cheat Prevention
During the college entrance examination, the school will open Can You Block Outgoing Calls On A Cell Phone , which will affect the call quality of customers around the test room, such as frequent call failures, missed calls, dropped calls, intermittent calls, and slow Internet access. After the test, it will return to normal. At the same time, in order to ensure smooth signals around the campus, the operator has arranged in advance communication engineers to test the entrances and exits of each test center and the rest area for parents accompanying the test, and expand the hardware and software of nearby base stations to ensure that high traffic, High Flow. We have done our best to keep your communication flowing, except for the signal being blocked during the exam. We know that every year in the college entrance examination, in order to prevent fraud in the examination, all communication signals in the examination room will be blocked. There are cell phone jammer in the test room. At the same time, there is a radio monitor outside the test room that can help to get the electromagnetic wave signals in those frequency bands that the mobile phone jammer can't care about, and monitor the radio wave signals of unknown sources in real time. The working principle of the mobile phone signal jammer used in the college entrance examination is to bury useful electromagnetic wave signals in a large number of useless signals.
Can You Block Outgoing Calls On A Cell Phone The shielding range is based on the power of the device. If the shielding range is different according to the strength of the local environmental signal when testing in the field, for example, the weak shielding range of the indoor signal is large, and the outdoor accessories have a GSM base station or something, then the GSM signal The outdoor shielding range is near! As we all know, 2G, 3G and 4G: Before buying, you need to know which signals you want to block. Ordinary mobile phone signals (234G) can be selectively blocked. If you only block 23G or only 34G, this is OK Adjusted before leaving the factory, there are also 2.4GWIFI, 5.8GWIFI and other frequency bands. Generally, ordinary signals can be quickly shielded. Shielded frequency bands: CDMA800, GSM900, SCDMA1800, DCS1800, PHS1900, TD-SCDMA (Mobile 3G), CDMA2000 (Telecom 3G), WCDMA (Unicom 3G).
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