More proprietary claptrap requiring that everyone involved must install and use a third-party app.
A couple of years ago, there were 5 billion SMS users World-wide. Proprietary schemes will come and go.
Your SMS apps are third party apps. SMS is too limited of a protocol when it comes to audio, video, images, and privacy.
I say this as someone who thinks text messaging is beyond stupid and sends/receives 20 or less messages a month, but what's wrong with SMS?
It is slower, you cannot see when someone is online or not, it is less secure and there is less privacy. If law enforcement wants to snoop through any of your texts they can do so to their heart's content. SMS is how they catch the stupids. It's crazy how many times I watch the detectives on The First 48 pull up incriminating evidence from someone's message history.
Their media capabilities leave much to be desired as mentioned. I enjoy sharing dank memes with my friends and S.O. It's harder to do that via SMS.
It doesn't matter what carrier you have, it doesn't matter the OS of the phone, it's universal. No way in hell would I sign up for some third party messaging service, especially WhatsApp which is owned by Satan. All these different messaging platforms remind me of 20+ years ago. ICQ, AOL Instant Messenger, Yahoo Messenger, MSN Messenger.
Yet you have chosen to sign up for some third party Internet forum...
He's a smart man! I'm done with smart phones and cell phones in general. When my current phone dies, I'm going back to a flip phone or just going to get rid of it completely. The audio quality on landlines is better, I find smartphones uncomfortable to hold to the ear and no matter how much you customize the constant notifications, beeps, boops, bings and tings are annoying as hell. Leave me alone! Plus after 12 years, I still can't type on a touch screen keyboard. These devices were supposed to make life simpler, all smartphones do is make me more miserable and drain my bank account. And who the hell in their right mind wants to watch video on a 5"-6" screen? I can't stand how these devices have turned us into zombies, and I refuse to be part of that. Most of the time my phone sits on my closet shelf or in the cup holder in my car until the battery dies. Which doesn't take long, unlike my old Nextel iDEN phones that could go upwards of a week in between charging, and when the battery life was depleted, you just pop the back off and put a new one in.
I know 3 or 4 people who don't have cell phones and they don't appear to be missing out on anything besides the aggravation.
Nothing smart about constantly getting lost when you visit new places. Not being able to dial 911 in an emergency. Nothing smart about dying alone.
Having access to Google Maps at all times alone makes smartphones worth it. I met my fiancée through Tinder. I have family and loved ones on GPS tracking so we can all see where the others are pinpointed on Google Maps. If I ever get kidnapped at least the cops will have a lead to go on!
When I have downtime out in public at least I can do something productive with my time thanks to the advent of smartphones. Before folks would just sit around twiddling their thumbs. Now I can work on my foreign language skills in Duolingo while I'm waiting for my plane to arrive.
Just because you have a phone for some key 'on the go' functionalities doesn't mean you have to heavily use the thing when you're at home. It would be absurd to use my phone to watch videos when I have a nice 78" 4K TV right in front of me. My smartphone hasn't made me a "zombie" any more than my desktop PC / TV has. The zombies you see on the phone all the time tend to be younger folks who don't know any better and have never experienced nice home theater setups. You can have a smartphone without being a zombie on it.