Almost all iOS apps are sending telemetry to data brokers like Facebook and the platform makes open source stuff extremely hard. It really is marginal when you look closer.
Yes, but only if you're foolish enough to install the apps. With Android, an individual app may or may not be a worse actor than it would be on an iOS device. But, it hardly matters since Google is primarily doing all the invasive tracking on an Android device, and you have zero control over this.
It's hard to even find a good feature phone these days.
At least I'm looking for one now because my Nokia E5-03 died yesterday so now I have to figure out what to get.
I want something small, that I can stick in my pocket and not worry about the screen, with days of standby battery life, and where I don't have to read and "agree" to pages of legalese.
In the heyday of feature phones, I could pick one up for $20. Nowadays, those phones are designed for old people, and are more expensive than a cheap smart phone.
If you're someone who's able to figure out how to block such things on Android, then you'd be happy to know that this is possible on iOS by using apps like Lockdown that work completely on-device. [1]