Cell phones bring us a lot of convenience and entertainment, but they may also bring some negative effects. Here are some of the things that mobile phones have brought us:

1. Convenience: Mobile phones allow us to stay in touch with others anytime and anywhere, communicating with friends, family and colleagues through phone calls, text messages, social media, etc. It also provides easy access to the Internet to get information, handle transactions, and shop at any time.

2. Learning resources: There are many learning resources on mobile phones, such as e-books, online courses and learning apps, which can help us acquire knowledge and improve skills. You can use your phone to learn new things, such as languages, programming, etc.

3. Entertainment: There are a variety of entertainment apps and games on mobile phones that can help us relax and pass the time. But pay attention to moderate use, avoid addiction.

4. Access to information: Mobile phones allow us to get news, weather, stocks and other information at any time, helping us to keep abreast of the world.

However, improper use of mobile phones can also have some negative effects:

1. Distraction: Features such as notifications, social media and games on mobile phones may distract us, affecting our study and work efficiency.

2. Social isolation: Over-reliance on mobile phones can lead to alienation from real life relationships and a lack of face-to-face communication.

3. Sleep problems: Using mobile phones at night may interfere with sleep and affect sleep quality.

4. Time management issues: Spending too much time on your phone can lead to time management difficulties and missing out on important study and work opportunities.

To better manage your phone use, consider the following tips:

1. Set a time limit: Set a time limit for using your phone every day, arrange your time reasonably, and avoid over-reliance on your phone.

2. Set the DND mode: When studying and working, set the mobile phone to DND mode to reduce interference.

3. Prioritize what's important: Make sure to do important school and work tasks on your phone instead of obsessing over social media and games.

4. Develop other hobbies: Participate in more beneficial activities, such as reading, exercising, socializing, etc., to diversify your life.

5. Take regular breaks Avoid using mobile phones continuously for a long time and take regular breaks to protect your eyes and body health. A mobile phone is a tool and how to use it properly is up to the individual.

Reasonable use of the convenience and entertainment functions of mobile phones, while paying attention to control the use of time and distraction, can better balance mobile phone use with other aspects of study, work and social needs.