Whatsapp

1. Background story

1.1. History(Setup, Inspiration)

2. Co-operation

2.1. Facebook

2.2. Instagram

3. Controversy

3.1. Privacy

3.1.1. Read receipts

3.1.2. Last seen

4. Target Region

4.1. Asia

4.2. America

5. Effects

5.1. postive

5.2. negative

6. Future development

6.1. Whatsapp Call

7. Functions

7.1. Text

7.2. Photograph and Video

7.3. Audio

7.4. Contact

7.5. Location

7.5.1. Location-based

7.6. Group message

7.6.1. 100 Person Group