Какие плюсы и минусы сотовых телефонов, исходя из текста?

Минусы : people are depend on mobile phone. People feel uncomfortable when telephone is off. Mobile phones are harmful and not good for our health. 
+: People can call wherever they want. People can send e-mail, images, messages to their friend. Also they can download and listen to music while they are going somwhere. There are also interesting games in mobile phones. the biggest advantage of mobile phones when it has a big memory. Because we can store a lot of information or music. One more advantage of phones it is five megapixel camera where we can take a picture. GPS - navigation, too.