See for yourself whether only the telecom signal has weakened, or whether the signals of China Mobile, China Unicom, and China Telecom have weakened. If only one of them gets weak, it could be a problem with the operator. The current How To Create A Cell Phone Signal Blocker is the full frequency band, which can block all 2G 3G 4G signals and 2.4G WIFI signals of the three major operators of China Mobile, China Unicom and China Telecom. If the Wi-Fi and cell phone signals of the three major carriers have weakened, it may be that cell phone jammer is installed. If this is the case, only install a cell phone signal booster near the place where the cell phone signal jammer is used to increase the cell phone signal. When cell phone signal gets stronger, cell phone jammers will be harder to block.
Use How To Create A Cell Phone Signal Blocker in the test room to block all mobile phone signals in and around the test room; prohibit candidates from bringing electronic timers such as watches into the test room, and the test room is uniformly equipped with a clock to prevent candidates from cheating using electronic devices and other tools; candidates are prohibited from bringing their own signature pens, erasers, etc. Stationery enters the examination room, and candidates are provided with stationery bags and necessary stationery for examinations to further prevent candidates from cheating by using stationery for examinations. At the same time, before the test, candidates must also collect fingerprints and keep the original evidence for future reference in case of taking the test and studying. For high-tech electronic products such as wireless earphones, all examination rooms will use wireless earphone detectors commonly known as "cheating" to discover wireless earphones as soon as possible. Outside the examination room, relevant departments use wireless signal monitoring equipment to monitor all suspicious wireless signals in and around the examination room.