Ad vantage of mobile phones are.
you can call some one if u r late 
you can inform uor parents if u have any extra classes
it is an source of entertainment 
disadvantage of mobile phones
children get to engrossed in the mobile phone and forget there studies 
they chat with strangers which can lead them to wrong path
also phone has harm radiation which can destroy your body specially your eyes and years
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It can help us to communicate with our friends. Mobile phones can help you in emergency cases like accidents. 
they have made our work easier. we can get easy access to internet, GPS system, music, camera,etc. This small gadget has everything in it. Mobile phones can even help you in e-education system.
mobile phones can cause damage to ears. recent studies have proved that ray emitted by mobile phones can cause serious damage to health. mobile phones have reduced social activities. 
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mark it best pleeeeeeeeeeeeeeeeeeeese