The are several issues with cell phones. The obvious deadly risk is driving and texting which has prompted several new laws. Then there is the slight health risk of holding the phone to your head for extended periods of time. Also users who are obsessed with being glued to their cell phone constitute safety problems to those around them.
Cell phones can pose a safety concern and should be taken into consideration in certain situations. However, they are also very helpful and perfect for sticky situations (getting stuck on the side of the road, needing a life, etc). Cell phones and all technology is able to be used for harm though.