You're sitting in your favorite coffee shop. You want to use their Wi-Fi, but your smartphone did not connect automatically as it always does. What might be the cause in this situation?

On some smartphones, it's easy to mistakenly press the Airplane mode button. Airplane mode disables your device's cellular and Wi-Fi service so that it does not interfere with plane controls during takeoff and landing. Fortunately, turning off Airplane mode is just as simple.