Comment by chatmasta

I've had Lockdown mode enabled for a few months. It's great, and not much of an annoyance at all. You do need to be fairly tech-savvy and remember that it's enabled, because sometimes something silently breaks and you need to opt-out of it (which you can do for a specific website, or WebViews within a specific app). And it won't auto-join "insecure" WiFi which can be annoying at a hotel, but frankly it's probably for the best. Also you won't receive texts with attachments in them, which is usually desirable but breaks workflows like activating a new SIM card while traveling (it's possible this was broken for me due to some other setting to exclude texts from unknown numbers).

The most noticeable difference is that SVG elements (?) are replaced with emojis. I'm not sure how that fallback works but it's funny to see buttons have seemingly random emojis embedded in them. (Does anyone know the details of how this replacement is done? Is it actually glyph fonts being replaced, not SVG?)