in my opinion 70% harmful..... LOL
How is a cell phone useful in everday life
A GPS tracking device in your cell phone can be useful for locating someone who has their cell phone on but is not answering it. This would be an emergency situation.
lion are useful and harmful
Buying a cell phone booster is useful in circumstances such as when you are in a canyon or valley and your cell phone is frequently dropping calls or if you have dead zones on your way to work.
It is not harmful. Also it is not useful
If someone has a cell phone locator then it means they can find their phone if it has fallen out of their pocket. There are a lot of people who put their phone down and then forget so it can be useful.
so we can communicate to people and we can know where our children are at
The changes talking place in our surroundings and which are useful to us are called Useful changes. The changes which are not useful but harmful are called Harmful changes
There is no definite answer currently. Scientists and doctors will know more as the years progress, because cell phone waves would have a gradual effect on the brain, and evidence will become apparent (and more people eligible) to figure it out. So, better safe than sorry... don't sleep with your cell phone by your head.
The scientific community has not definitively proven that the low levels of radiation emitted by cell phones are harmful to humans. However, it is recommended to limit exposure by using hands-free devices or speakerphone, and keeping the phone away from the body when not in use.
Home phones can have a more consistent connection than cell phones. Also, not everyone wants a cell phone as some people are afraid of possible cell phone radiation.
useful