According to your description, the wifi jammer in your school may only block the 3G/4G Internet access function, but not block the 2G function of making calls and sending text messages. Behind the wall, the shielding function will be weakened, so there may be a little signal in the toilet. If you want to break through the wifi jammer device, the shielding device will be difficult to block.
According to your description, the wifi jammer in your school may only block the 3G/4G Internet access function, but not block the 2G function of making calls and sending text messages. Behind the wall, the shielding function will be weakened, so there may be a little signal in the toilet. If you want to break through the wifi jammer device, the shielding device will be difficult to block.