6. Hearing Loss
One of the great things about most cell phones is that you can load them up with your favorite music and listen to it on the go. The problem stems from the fact that many of us like our music loud, and that can damage hearing. It is estimated that about 30 million people have caused permanent damage to their hearing as a result of exposure to loud noise. A normal conversation registers about 60 decibels, and just taking that up to 85 decibels (which is very easy to do) can cause hearing loss. The solution is easy and obvious: Turn it down.