Having an Iphone 6s in 2019 worthful?

Having an Iphone 6s in 2019 worthful?

IPhone 6s premiered in 2015, people typically purchase the iPhone due to its smoothness/fluidity, the simplicity of use and the type of software service that Apple supplies, which is OS upgrades. How Apple is still promoting the iPhone 6s, a four-year-old mobile...