Why would I have a verizon system apps on a brand new tmobile phone?

I bought a brand new s9 from tmobile and it has com.vzw.apnlib and vzw_msdc_api. I spoke with Samsung directly and they told me that they don't install carrier apps. TMobile just told me not to worry about it. Anyone have any idea why these apps would be there? I did a hard reset on the phone and the apps are still there.

Strange, T-Mo selling VZW branded phone. That's not normal.

Welcome to Android Central! Sometimes, a manufacturer will install a carrier-specific app on an unlocked phone just in case you end up using the phone on that carrier. I've seen that for certain Sprint apps on unlocked phones. Even though you bought your phone from T-Mobile, it's still technically carrier-unlocked (assuming you meet their unlock criteria).