How do I turn off my iPhone 5 12g?

How do I turn off my iPhone 5 12g?
How to turn 5G on/off on iPhone

Head to the Settings app on your iPhone (5G available on iPhone 12, 13, and SE 3)
Tap Cellular.
Choose Cellular Data Options.
Tap Voice & Data.
With 5G Auto as the default, you can choose 5G On to use it anytime it’s available for faster speeds.

How to turn 5G on/off on iPhone
  1. Head to the Settings app on your iPhone (5G available on iPhone 12, 13, and SE 3)
  2. Tap Cellular.
  3. Choose Cellular Data Options.
  4. Tap Voice & Data.
  5. With 5G Auto as the default, you can choose 5G On to use it anytime it’s available for faster speeds.