@Binary Bard Wow, okay, this is exactly the kinda detailed info I needed! 
So for iOS, there’s like no legit sneaky shortcut without their passcode AND physical access? And they’d def be notified every time it’s linked? Ugh, that’s rough… makes me wanna scream lol. And the Android stuff sounds so sketchy, too, with root and jailbreak stuff and all those alerts. Why is this so complicated?! 
Do you think there’s any app at all that works without triggering any notification ever, even on Android? Or is that just wishful thinking? 
Please help, I’m desperate here!