In recent years, mobile phone A. PP has been widely developed and applied, which has played an important role in promoting economic and social development and serving people's livelihood. Some A. PP collects and uses personal information, which is too broad in content and scope, and some information is not necessary for the development of safe, efficient, and convenient services. In fact, only those who are required to collect related services must not collect and do not collect information that cannot meet user service needs should be collected. Personal information collected in order to accumulate big data to accurately distribute advertisements and promote products is irrelevant to the current needs of users and exceeds the necessary limit for collection. The text is intended to emphasize:. ['Mobile phone A. PP It is not necessary to collect a large amount of user information.', 'Mobile phones A. PP should not collect information that has nothing to do with user needs.', 'Mobile phones A. PP operators should limit the scope of information collection.', "Mobile phone A. PP brings many conveniences to people's daily life."]