why does it say localhost…? I can use startpage.com just fine through my ProtonVPN (japan)

I usually use AdAway for this. When installing a new app, use PCAPdroid and AdAway’s logger to find tracker servers apps connect to that isn’t blocked by AdAway’s default lists and block them manually. (And don’t enable internet connection at all unless it’s really necessary, using AFWall)
Debloating apps using LuckyPatcher before all this is also useful, like there’s no reason to have bytedance sdk running. Though it’s arguable that LuckyPatcher itself isn’t really trustworthy, so I usually have it disabled (by Android; using adb or using something like the ‘Blocker’ app) and enable it only when I need it.

i root with magisk and use afwall and adaway to block stuff. maybe not the most secure but it’s pretty private, at least i know there’s no weird network connection happening without me knowing.
it all depends on your threat model, but IMO your idea is decent. personally i’d rather have another lineageos phone for calls, since the iPhone’s phone app sucks (no call recording) and it being connected to the internet means it can be tracked by apple. also it’s impossible to install any apps on iOS without an apple account. (unless you jailbreak, which is a pretty different story. your iphone 7 can be jailbroken with checkra1n which is good tho)

Thanks for the recommendation!
I’m trying to move a friend groupchat away from discord and there are users on all those platforms.
Are you hosting your own server? How’s it working with multi devices one one account (phone and desktop usually)? I’ve experimented with prosody a bit and it seemed like only one machine was able to receive message at one time, so the phone and computer quickly got out of sync.
Sorry for asking too many questions, it’s hard to find these things easily.

may i ask what clients you use for xmpp? conversations.im is the obvious best choice on android but not sure on ios, macos, linux, windows etc
pluma is good. i used it until switching to vim/emacs https://en.m.wikipedia.org/wiki/Pluma_(text_editor)

btw my work website also checks if i’m active/focused on a tab or if I clicked off it, this addon spoofs it well https://addons.mozilla.org/en-US/firefox/addon/always-visible/
lol this actually sounds like a good idea