The second is the world of smart phones to have a great role in promoting development, one can not discard it. Therefore, despite many drawbacks, but always more good than harm.
Second, smartphones have a big boost to the world's development, and people can't throw it away. Therefore, despite its many disadvantages, there are always advantages over disadvantages.
Second, smart phones play a great role in promoting the development of the world. People can't abandon them. Therefore, although there are many disadvantages, the advantages always outweigh the disadvantages.<br>