Dialer is an Android system application that provides a distraction-optimized (DO) experience for Bluetooth calling, contact browsing, and call management.

What does used Android dialer mean?

It means somebody used the phone to make a call. It’s the dialer app.

What does used Com Samsung Android messaging mean?

If it’s a Samsung phone, it’s likely the stock messaging app. Just because it shows up on your activity list doesn’t mean you’re actively sending texts. It might mean that it was accessing your Google account in order to sync data.