1. The History of Cell Phone
Dylan

2. 1973 Motorola
25000 RMB

3. 2007 iPhone The Background map shows the appearance of iPhone.
The price of this iPhone is 399 dollars.
The title shows the popular brands of this iPhone.
It features a 3.5-inch capacitive touch screen and you can choose the 4GB or 8GB for internal stora.
The problem with it is internal storage capacity is too small, running speed is slow, screen size is too small.I think the solution was to get Apple to speed up R&D at the time.

4. The Presence of Cell Phone

5. 2018 iPhone XS/XS Max
The Background map shows the appearance of iPhone.
The price of this phone is 1099 dollars.
The title shows the popular brands of this iPhone.
Its functions include face ID and the screen size is bigger than iPhone X and A12 slug. And then the first time, iPhone has double cards and double stay.

6. How to solve the problem of being addicted to cell phone
I think you can contorl your thought and make a plan.
Hang out with friends,stay away from your phone.
Let your parents surpervise you.

7. The Future of Cell Phone

8. The Future of Cell Phone
I think the future of cell phone is like this picture,it is transparent and easy to carry.I consider it can float in the air and very thin like a thin piece of glass. And then i think it can bend and twist and it can change form to watch.