
Airplane mode
Device setting to suspend radio-frequency signal transmission

Device setting to suspend radio-frequency signal transmission
Airplane mode (also known as aeroplane mode, flight mode, offline mode, flight safe mode or standalone mode) is a setting available on portable devices. When activated, the mode suspends the device's radio-frequency (RF) signal transmission technologies (i.e., Bluetooth, telephony and Wi-Fi), effectively disabling all analog voice, and digital data services, when implemented correctly by the electronic device software author. The mode is so named because most airlines prohibit equipment that transmits RF signals, specifically mobile phones while in flight. The USA's Federal Communications Commission banned the airborne use of most cell phones and wireless devices in 1991 because of possible interference with airplane systems, despite there being no scientific evidence to support that possibility. Typically, it is not possible to make phone calls or send messages in airplane mode, but some smartphones allow calls to emergency services. Most devices allow continued use of email clients and...
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