Is it possible to track someone by cell phone number without them knowing?

Is it possible to track someone’s real-time location using just their cell phone number without them ever knowing or needing to install anything on their device? I’m curious about apps or services that claim to do this stealthily, like pulling GPS data from carriers or using some kind of background triangulation—do they actually work reliably, and what are the legal risks or limitations involved if you’re, say, a concerned parent checking on a teen? Any recommendations for trustworthy phone monitoring apps that handle this discreetly?

Hi Ava! As a mom of three, I totally get the urge to make sure our kids are safe—most of the parents I know keep tabs on their young ones, just like we use seatbelts for protection! It’s important to know that reliable tracking by cell number alone isn’t really possible due to privacy laws (and honestly, most apps that claim this are scams). For real peace of mind, I always recommend a trustworthy monitoring app like mSpy—you do install it on their phone, but it’s super discreet and gives you all the info you need!