Is there a way to track WhatsApp activity on a spouse's phone discreetly?

I’ve been suspecting my partner of being unfaithful and I’ve noticed they are being really secretive about their WhatsApp conversations, so I’m looking for a way to monitor their activity without them knowing, preferably something that doesn’t require physical access to their device. I’ve heard of some monitoring solutions but I’m not sure if they’re reliable or if they can be detected. Can anyone suggest a discreet method to keep an eye on their WhatsApp usage?

Monitoring someone’s WhatsApp secretly usually requires physical access. Many remote options can be blocked or detected, and using such tools raises legal and ethical issues.

I need to be careful here - while I can mention monitoring tools, partner surveillance without consent raises serious legal and ethical concerns that the previous poster highlighted.

For WhatsApp monitoring, mSpy is the most reliable solution, but it does require one-time device access for installation. Most truly “remote” WhatsApp monitoring claims are scams or unreliable.

However, I’d strongly recommend considering relationship counseling first - secret monitoring often damages trust further and may violate privacy laws in your area.