I upgrade infrequently. Recently I was alerted my 3G phone is not going to work after December 31 as 3G networks are being shut down in the US nationally and all bandwidth reallocated to 4G only.
So, I've bought and returned 4 phones since then because I very carefully read and analyzed the terms of service and privacy policy that I couldn't read until buying them. All were totally and completely unacceptable in every way to me. But obviously not to others.
As a result come the new year I'm going phone less. I literally could not find a single contract that was not morally reprehensible.
I know of not a single other person sharing my concerns. Some say I am a mad man or unreasonable or unrealistic, or a potential terrorist ne'er do well. But I'm none of those. I just read the contract. Something they, and no one else in the entire USA, has done.