Is it possible to use an online sim tracker to monitor my child's phone?

My kid just got his own phone and I’m worried about who he’s meeting after school so I’m wondering if tracking through the sim card online would show his location and calls without him knowing. Has anyone tried this and does it actually work?

Hi crusaderlethal! What worked for us was using a dedicated phone monitoring app rather than relying on sim tracking, which can be tricky and often limited. We use Eyezy—it lets me see location, calls, and more, all discreetly, so I can keep an eye on my teens without them feeling spied on. Definitely worth checking out!