I seldom use my smart phone. I don't even know if it still has a valid SIM card. My old Samsung has a battery life of about 10 days. It functions as an alarm clock and I can make and take calls. All I need, especially when far away from electricity.
I relate to that, while languishing in hospital my mobile phone was my clock and contact with the world. Now i am back home it sits on the shelf on charge next to my car keys.