Discussion: Use this section to explain why the predictions of the model might be rejected. Alternative explanations should be provided and justifications given as to why some predictions might get rejected by data.And also give directions along which this study could be extended?You can use your imagination?Thank you!

I determined the model through the market share and the investment of apple and Samsung in advertising every quarter.

Thank you so much?

Payoff and table In order to study the simultaneous-move game between the two companies in terms of the two choices" Launch of new products" and "Advertising", we collected the relevant information for the two companies to take corresponding measures. We collected the timing (Using one or two quarters as a period) of the choices taken by the two companies and the changes in the affected market shares over the same period. We try to figure out the impact of taking choices on the two companies through the changes of market share during the same period, so as to analyze the game situation of the two companies. The chart below shows Apple and Samsung's market shares on a quarterly basis between 2018 and 2020 2018-2020Smartphone Market share Apple&Samsung 23.2 23.0 20 15 10 OTRE OTRA Samsung Market Share (9%) Apple Market Share (9%) According to the above table, the market share changes of the two players during different periods can be obtained The following is the table of the changes in market shares for choice " Launch of new products "(Containing the names of relevant new products) Period Apple Samsung 2020 Q1 Down (-3%) Galaxy $20 Ultra 2019 Q3 Rise (9% ) Down (-3.2%) iPhone 11, iPhone 11 Falaxy Note10 & Note 10+ Pro, iPhone 11 Pro Max 2019 Q Slightly Rise (0.4% amsung Galaxy $10 2018 Q3 Rise (5.8% ) Slightly Down (-1.2%) iPhone XS iPhone XS Galaxy Note9 Max, iPhone XR 2018 Q1 Slightly rise (2.2%) Samsung Galaxy $9 From the above table, we can get the changes of market shares of the two companies when acting choice "Launch of new products" at the same time or alone. The following is the table of the changes in market shares for choice " Advertising"(Containing the relevant names of the new advertises. Period Apple Samsung 2020 Q Slightly Rise (2.2%) Down (-3%) Commercial | Apple. (2020, Commercial | Samsung. (2020, Feb 12) Jan 12). Shot on iPhone 1 1 Galaxy $20 Ultra: Official Introduction Pro - Chinese New Year - Daughter |Apple 2019 Q4 Down(-6.7%) Commercial | Apple. (2019, Oct 23). Shot on iPhone 11 Pro - Selena Gomez - Apple Apple 2019 03 Slightly Down(-3.2%) Commercial | Samsung. (2019, Aug 8). [Galaxy Note10 & Note 10+] Official Introduction | Samsung. (2019, Aug 10). A Day in the Life With the Galaxy Note10. 2019 Q1 Slightly Rise(0.3%) Commercial | Samsung. (Mar 8, 2019). Samsung Galaxy $10: available now. 2018 Q4 Down (-6.4%) Commercial | Apple. (2018, Sep 13). Introducing iPhone XS, iPhone XS Max, and iPhone XR - Apple Apple 2018 03, Q2 Rise(7%) Slightly Down (-2.2%) Commercial | Apple. (2018, Commercial | Samsung. (Aug 23, Jun 6). WWDC 2018 Keynote 2018) Galaxy Note9: Fortnite Supply Drop. Apple Apple 2018 Q1, 2017 04 Down(-7.8%) Slightly Rise(2.2%) Commercial | Apple. (2017. Commercial | Samsung. (Feb 25. 2018) Nov. 10). Apple - Inclusion & ng Galaxy $9: The Camera. Diversity - Open Apple Reimagined. According to the data in the above table, we have sorted out the market share changes of two players in this simultaneous-move game. Market shares can reflect the competitiveness, trading and profitability of a enterprise in the market. As a result it is chosen by us as the pay-off. However, due to the uneven data on market shares changes, it is not convenient for the overall analysis of the game, so we classify and assign different degrees of market share changes to facilitate the game analysis Market share change interval Changes group "ofj assignment -7.8% -2.2% Slightly Down -2.2% 0% Down 0% 3.1% Slightly Rise 3.1% -9% Rise Different market share changes are divided into four levels "slightly down" "down" "slightly rise" rise" and assigned different degrees "-4" "-2" "3" "7" as pay-off. Column Player: Apple Row Player: Samsung Launch of new Advertising products Launch of new -4, 7 (1903 ) 3, -4(1801) products Advertising -2. 7 (1803) -2, 7(1802) Based on the data tables above, we have collated their contests of choices. In the third quarter of 2019, both players chose this time to launch new products, and the change of market share corresponding to this choice is Down (-3.2%) for Samsung as -4 and Rise (9%) for Apple as 7. In the second quarter of 2018, both players chose this time for "Advertising", and the change of market share corresponding to this choice is Slightly Down (-2.2%) for Samsung as -2 and Rise (7%) for Apple as 7. In the first quarter of 2018, Samsung choose to launch new product and at the same period the new advertise of Apple were launched to the market. and the change of market share corresponding to this choice is Slightly Rise (2.2%) for Samsung as 3 and Down (-7.8%) for Apple as -4. In the third quarter of 2018, Apple choose to launch new product and at the same period the new advertise of Samsung were launched to the market. and the change of market share corresponding to this choice is Slightly Down (-1.2%) for Samsung as -2 and Rise (5.8% ) for Apple as 7