My now nearly four-year-old iPhone has been flaking out on me with increasing frequency for several months, and for variety of reasons I've decided to replace it with an Android phone. One of those reasons is that Apple's warm embrace increasingly feels to me like that of a boa constrictor. And today That concern became less general and more specific when a friend posted about their difficulties sending SMS messages to a friend who recently punted their iPhone. Apparently it is a known problem that when you switch from an iPhone it becomes difficult or impossible for someone who is also using the Apple ecosystem to send you SMS messages: Apparently — I'm hypothesizing at least as much as remembering here — Messages.app takes over when two iPhones SMS one-another, and if one person switches to a non-Apple phone, that person has to jump through some hoops with the Apple infrastructure or their iPhone-using friends' messages will go only to that person's Messages.app instances (wherever they happen to have it running, or possibly nowhere) but not to their new phone as SMS messages.
I'm writing this here not least as an aide de memoire because I don't have time to look into it in detail right now. If one of you happens to know of good guide to switching from an iPhone to an Android phone without getting entangled in this mess, please leave a pointer in a comment. Thank you.