In order to turn off the Airplane Mode, you will need to go to the phone settings and disable the Airplane Mode from there.
Please following the below section to turn off the airplane mode:
1. Please exit the TalkieLock App (if you are locked inside the TalkieLock). Please check this article for how to exit the TalkieLock: https://smartwalkie.freshdesk.com/support/solutions/articles/33000265081-exit-talkielock-on-the-device
2. Open the phone Settings.
3. Choose the "More Network" option.
4. Turn Off the Airplane Mode toggle.
5. Exit the Settings then Lock back your device to the TalkieLock by opening the TalkieLock or Scalefusion App.