Someone sends a text message when the flight mode is on, but can they still receive it when the flight mode is off?

1. You can still receive short messages when airplane mode is off.

2. Flight mode principle

Mobile phone flight mode is also called aviation mode, which means that the mobile phone must be turned off during flight to avoid the influence of the transmission and reception of mobile phone signals on aircraft flight. Some mobile phones have this function, which can turn off the signal transmission and reception of SIM card. In flight mode, the phone turns off the telephone communication function, that is, it can't answer the phone and send short messages, has no signal contact with the base station, and doesn't try to contact the base station. Because the mobile phone signal will interfere with the electronic equipment on the plane, it is not allowed to turn on the mobile phone on the plane, and this mode closes the related functions of the mobile phone signal, so it is named flight mode. Nokia, Sony Ericsson, Apple, Samsung and many other domestic and foreign brands have already brought this function, and mobile phones without this function can also realize this function by downloading software. Because most of the power of the mobile phone is spent on searching for the base station signal, the mobile phone saves electricity when turning off the signal in flight mode.