I’m a Mac user, so it was with some trepidation that I went back to an Android in 2017. But my iPhone’s battery was going, and if I replaced the phone, my existing $45/month didn’t-exist-anymore-but-we’ll-let-you-keep-it-if-you-give-us-your-soul Sprint plan would be defunct. I’d have to upgrade the plan and pay an extra monthly fee for having a …