Nowadays, mobile phones take a lagre part in our life. We can't imagine life without them. Every teenager has mobile phone. As for me, i have mobile phone too. Using mobile phone i can chat with my friends online or connect with my family. Also using mobile phone can cause a lot of problems. For example: almost all people spend a lot of time using their phones. That makes their eyesight worse. Besides, all users have addiction. To sum up i can say that mobile phones are nessecary in our days but you should use it more careful.