There are few people today who could exist without their mobile phones. However, the mobile phone has its drawbacks that people often forget (1) ... . Not all people know how to use a mobile phone (2) ... proper respect to the people around, so trying to sleep (3) ... a bus these days has become practically impossible. However, there is no denying that mobile phones have a number of advantages. Parents give their children more freedom if they take their phones with them when they go out. In addition, the mobile is (4) ... particularly effective tool (5) ... teenagers when they want to get home free of (6) ... charge, as all they have to do is dial their parents' number and the family 'taxi' will arrive at (7) ... arranged time. (8) ... balance, it seems that mobile phones have as many disadvantages as positive aspects.