The Symphony Concert Hall used wifi telephone signal jammer to be tested on the basis of the equipment of the three cellular operators currently installed on the site. It can be protected by...
The cell phone jammer that Pokane Middle School bought for testing was less than $ 100 for just three days. The aim is to prevent students from sending text messages on topics. John Hook, the...
When the phone’s battery starts and rings, it generates enough energy to produce a slight spark, which can cause a fire. Petroleum, chemical, security and other relevant departments have clearly...
