How to cancel the smartphone flight mode and send SMS to remind you to close the flight mode before sending it?

The flight mode is to turn off the telephone communication function, that is, you can't answer the phone and send text messages, and there is no signal contact with the base station. Don't try to contact the base station.

Because cell phone signals will interfere with the electronic equipment on the plane, it is not allowed to turn on the cell phone on the plane. In this mode, the related functions of mobile phone signal are turned off, and the mobile phone can continue to use other functions, such as checking the phone book and enjoying articles and movies on the mobile phone.

So it's called flight mode.

Most of the power of the mobile phone is consumed by the signal. Turning off the signal in flight mode is very energy-saving, so some users will use flight mode instead of turning it off at night.

The mobile phone has software that can start and cancel the flight mode regularly, which is called "automatic flight software".

Not all mobile phones support airplane mode. Basically all smartphones support airplane mode.

Therefore, SMS cannot be sent in airplane mode unless airplane mode is turned off.

I hope I can help you, and I hope to adopt it!