Mobile phone signal shielding instrument is the use of the latest Israeli interference technology, to produce held electromagnetic signals, covering the mobile communications GSM, CDMA, GPRS, city phone pass, small smart phone frequency band, so that the cell phone can not be used in some specific places, so as to solve some of the negative impacts of life now due to the signal of the cell phone.
WeChat is an instant messaging software launched by Tencent on January 21, 2011 for smart terminals.