Why would you limit yourself to simply one BT enabled phone? Too many have an old phone from their last upgrade sitting in a drawer in the house. Or also pickup a cheap burner phone. Don't even need service. While on the subject, you can take a phone with not service and enable WiFI. Then download Google's Voice app. Using a Google account, sign up for a Voice number. And when you have WiFi, the Voice app can make calls. Besides that any cell phone with or without service not even WiFi, can still make 9-1-1 calls. Could save your life.