Can the mobile phone watch still receive information after the screening instrument for the exam is turned on?

I can't. Mobile phone watches can't receive information, because the current signal shielding is full frequency band. It can shield all 2G, 3G and 4G signals, 2.4G, WIFI signals and Bluetooth signals under the three major operators of China Mobile, China Unicom and China Telecom. Its principle is to interfere the mobile phone to receive the frequency sent by the base station and wireless router through its own frequency, so as to achieve the purpose of shielding.