Phone is back
Ok, so the phone came back from Samsung on Thursday. Total turnaround time was one calendar week. EXCELLENT! Major kudos to Samsung. They had the phone a grand total of 24 hours before fixing and shipping it back. Plus, their communication with the customer is superb. It's the best I've ever seen. They literally stay in touch via email from the minute they receive your item until the the time you get it back.
So, the phone they returned was my original phone with one component replaced. I have no idea what that component was. The packing slip didn't specify.
The phone powered up fine and charged fine. It's behaving normally and all apps loaded, etc. Calls were made, texts, and emails exchanged, etc.
So, time is the factor now. The phone has been activated and operational with no crashes for the past 15 hours.
Please update this thread with your actions and the results!