I am still using the 2016 SE and it is working well enough for me. I do not do very much with the Phone, I prefer using iPad or Watch depending on the task. Who else is still using this model and how will you proceed in the future? Keep it as long as it works or upgrade soon, because it will not get updates any more? I must say, the main reason to upgrade would be for me the inability of my Watch series 7 to get higher OS versions. For the moment I am content with OS 8, though.