They can do it right up until the battery truly discharges. You can’t turn off WiFi/BT for real either. Icons will go dark and your WiFi and devices won’t work, but underneath the radios are still plenty active and powered on.
- You can disable this feature
- Disabling radios from Control Center behaves differently than from Settings
- You can disable this feature
- Disabling radios from Control Center behaves differently than from Settings