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It's a social cost question, I guess.

Your signal: I don't care enough about our communication to use WhatsApp, because of reasons that are obscure to 99% outside a tech community. Similarly, they don't bother to reach out to you on other communication channels, because they don't bother enough.

The important thing to understand is, from your communication partners point of view, you create a burden without reason, so they work around it in (their) most effective way.

I've been there and didn't support this or that messenger. By now I think, the only way to solve those kind of issues are i) sane laws that regulate privacy and communication security, and ii) trends that create a need for a new communication style - private, secure, and human (like, calling from time to time, find a better solution to ghosting, things like that).

I'm convinced that we need positive incentives for that, instead of creating artificial burden.

Let's say you have a lamp behind your screen. The light will be visible on your screen in some way.

With a reflective screen, you'll see a reflection of lamp, bright and clear. I think everybody agrees that this is annoying.

With matte screen, the reflection isn't strong or clear, but a larger portion of the screen is affected, since the matte layer scatters the light.

With a anti-reflective but non-matte screen, you'll see a 1:1 reflection - but only very very dim.

In my experience across the Lenovo matte screens, and comparing it to MacBook screens, I found the latter to work better.

There's a significant difference between the MacBook and cheapo reflective screens.

Another of these things I don't get. Matte screens become unreadable with indirect light. I've been a long time ThinkPad user.

But dim screens just don't work, no matter if it's matte or not. Bright screen with anti-reflective layer work much better, hate to say that.

Then you still don't have a good trackpad. Besides, the trackpoint is drifting across all models. I like to use it, but it's beyond my imagination why people think this is the best a manufacturer could do.

5G New Radio (the 5G physical layer) adds a couple of high frequency, low range bands to the game.

But low-frequency, high-range bands are available with 5G, too. It's a matter of policy and deployment strategy if you use these bands for 4G, 5G wide area coverage.

Some countries will continue having 2G on these Higher range bands. Others will re-use the bands for 5G.

So far, it's about public networks. You can use network technologies like 5G to roll your own network, too. The vendors market turn-key solutions for emergency services, e.g. a basestation on top of the firefighters truck.