Progress update: “Hello, new home/travel/anywhere smartphone”. After requesting phone service provider to unlock my old phone, I had a cell phone tech. move the SIM card from my old phone into one of the two SIM card slots in my new “home/travel/anywhere” unlocked smartphone. This leaves the second SIM card slot open for travel use. Home cell account is operational on my new phone: same phone no./same account/same phone service company for now.
I will learn to switch out SIM cards myself; wanted to watch a tech. do the switching this first time, & also asked him a few questions.