I deploy VOIP solutions professionally as a System Admin/Engineer, I happen to see all the problems that you haven't yet noticed.
Reliability wise, I'm talking about messaging improperly handling timestamps, not sending messages but saying their sent, and silently discarding messages sent to you. Timestamps and other dated items are necessary for non-repudiation; or proving to a specific level that is acceptable as evidence in a court of law (to hold business accountable).
I've seen messaging apps, text messages (which are a messaging app), not display errors and silently update fields later or disappear the messages when compared with a separate device on the same network. You only see it if you happen to have equipment to monitor what the baseband modem is sending and it fails at the cell tower (which may not be official). Phone providers open a ticket, then auto-close them within 30 days without resolution.
The way these systems work, there's heavy coding theory so if a transmission fails, it gets resent. Its not a result of interference but of failures at infrastructure nodes.
So what might happen to the relationships in your life if you stop getting messages from your friends, and from their perspective they stop getting messages from you. You miss things because you don't know about them. You think they'll be your friends long? If they aren't having the same issue, do you think they'll believe you when you notice it without provable times just on your say so, and they discount date and timestamps since they get updated?
If someone did that maliciously to isolate you, you wouldn't know and wouldn't be able to do anything about it. People would look at you like you were crazy. You do it long enough and isolation does interesting things to your psychology, and if your thinking there's no reason for someone to target you like that, you would be wrong.
Political warfare, or the destruction of the national will, in part involves priming people's psychology so they polarize into groups that are complacent (don't respond), or lash out at anything they see as remotely triggering (similar to your attachment to a cell phone). This allows a smaller group during a destabilization event to seize power; historically.
There's a great book published and freely available on the USMC University website about political warfare and what it exactly entails. Bezmenov isn't that reliable.
GDPR and DSA are only reactive. What happens when the violators are moving targets (nefarious non-business).
Your email provider has access to read, and more importantly prevent you from sending email to others. Preventing communication without alerting the sender is how this is weaponized.
WhatsApp regularly uses your microphone in the background; maybe its location finding from your local power hum (50/60hz) did you agree to that or did they update the terms after the fact and continued use is acceptance?.
All these things happen regularly. The fact that you think they don't happen, and have discounted it so completely and are so attached to a device that literally can make you go crazy under the right causable circumstances looks like an addiction spiral to me or impossible levels of extreme ignorance about how you are manipulated on a daily basis (sheep-le) with no real thought because thought requires risking being wrong to learn what's right.
A non-attached person would simply say, I go with what works and leave it at that, and take a critical eye towards reliable methods being deprecated. It certainly appears you are attached whether you know it or not.