Thesis: Cell phones have changed over the past 37 years in the areas of usage and popularity, appearance and features, and the cost of cellphones and their services.
P2: I. The usage of cell phones today vs. when they were first invented
- Who uses cell phones now and then
- Common uses for cell phones now and then
- Popularity of cell phones now and then
- Cell phones in other countries now and then
- Weight
- Size
- Display screens
- Flip/Slide/one piece phones
- Color
- Features of cell phones now and then
- Battery life now and then
- Popular service providers now and then
- Cost now and then
- How easy they are to obtain now and then
I like your outline; you've got the whole thing figured out
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