Hi, I am Jade Garner. I am from the UK. The device which emits emf radiation is a cell phone. This is because the portable nature of the cell phone is its greatest appeal. This means that the cell phone is always close to the user. The electromagnetic frequencies emitted by this device could cause the user's health to suffer especially if used over a long period. The emf protection is necessary. For best emf protection reviews you can visit here >> http://allaboutemf.com/.