Which come with microphones too.

Is S30+ or KaiOS (previously FirefoxOS) which Nokia uses really that much more secure?

Also, usability becomes a thing here. Most people don't even use their phone for calls anymore. Not being able to do the other stuff defeats the purpose.

But no apps or dodgy email links you can hack them with, perhaps? No idea

The most basic phones don't have KaiOS.

There are / have been hacks using SMS that didn't even require the user to do anything, but then again they required Android iOS to carry out the hack.

The smaller the attack surface the better (for the criminal).

> Also, usability becomes a thing here. Most people don't even use their phone for calls anymore. Not being able to do the other stuff defeats the purpose.

Afaik criminals that were using these special phone systems like SkyECC just wanted to make calls and send messages, they'll use something else for TikTok or whatever.

EDIT: SkyECC didn't have microphone enabled, it was just able to send messages

https://en.wikipedia.org/wiki/Shutdown_of_Sky_ECC

Even SIM cards have been hacked remotely:

https://www.theguardian.com/technology/2013/aug/01/sim-card-...

So, "simple is safe" is just not really a thing. SafER perhaps, but also so much less useful that it defeats the purpose of using one IMO.

I think it would be better to use a secure android ROM. Like GrapheneOS or CalyxOS.