Airplane mode stops the radiation, thus giving your immune system a better chance to keep you healthy.
On airplane mode (with most cellphones) you can still read your text messages and emails. However, you cannot send texts or emails. To solve that problem, while on airplane mode,
write your emails
write your texts
and then switch the phone off airplane mode for the few minutes it takes for you to send the messages. When they've been sent, put your phone back on 'airplane mode' and go about your business.
One exception to keep in mind: If your WiFi or Bluetooth are ON, you will still receive the toxic radiation. Check those two icons or find them on 'settings'. Make sure neither WiFi or Bluetooth are turned on.
With most phones, when put on 'airplane mode', the WiFi and Bluetooth are turned off, but double-check yours to make sure.
Although airplane mode is great, totally turning off your cellphone allows NO radiation to emit, and keeps you from wanting to continually check for updates.

Learn more about the connection between your immune system and EMF toxins at https://www.defendershield.com/emf-immune-system-affects-disease-chronic-illness/