I have an iPhone 5 (4 year old phone) running the latest OS and it works fine. No, it's not as fast as the latest devices, but it works adequately if one desire

I have an iPhone 5 (4 year old phone) running the latest OS and it works fine. No, it's not as fast as the latest devices, but it works adequately if one desires to keep using their 4-year-old device.