The smartphone device industry is an industry that is experiencing very fast movement and technology provides motivation for consumers to replace their devices every year. Brand trust is very important and companies try everything to keep consumers satisfied. However, some consumers try to replace it with another brand $($another company$).$ Three particular brands "Apple", "Samsung", "Huawei" dominate the market share. People who have an Apple branded smartphone device will buy the Apple brand again by $90\%$ and the rest will buy the other $2$ brands with the same chance. Owners of smartphones with the Samsung brand will buy the Samsung brand again by $80\%,$ while $10\%$ will buy Huawei and the remaining $10\%$ will buy Apple. About $70\%$ of Huawei device owners will buy Huawei, $20\%$ will buy Samsung. Each brand has a variety of consumers and plans to purchase a new smartphone device in the next year, $($Apple has $100,000$ consumers, Samsung has $250,000$ and Huawei has $500,000$ consumers$),$ how many devices from each brand will be purchased? And create its Markov chain?