what does airplane mode do

Airplane mode is a setting on mobile devices that disables all wireless and cellular signals coming from the device. This means that the device cannot send or receive calls, texts, or data while in airplane mode. It is also known as offline mode, standalone mode, or flight mode. Airplane mode varies from one device to another, but on an iPhone, it disables connectivity for cellular voice and data, Wi-Fi, Bluetooth, GPS, and location-based services. The primary purpose of airplane mode is to comply with most airlines' requirements that devices are off during takeoff and landing to prevent radio interference. It is also useful for times when you may be camping, out in the woods, or in a foreign country without cell service and you don't want to drain the battery constantly. If the airline allows it, you can use Wi-Fi and Bluetooth while in airplane mode by turning them on separately. However, cellular connections must be disabled, and devices must be used in airplane mode.