If you need to use your iPhone 5c without phone, WiFi, or Bluetooth signals being emitted, you can switch it to Airplane Mode.
This disables the wireless features and GPS reception of the iPhone to avoid interfering with aircraft operation and other electrical equipment.
To turn airplane mode on or off, you should:
1. Tap Settings
2. Tap on the OFF/ON button to the right of Airplane Mode
When Airplane Mode is on, an airplane icon appears in the status bar at the top of the screen.