What does airplane mode actually turn off? Calls, Wi-Fi, Bluetooth and GPS explained
Airplane mode (flight mode) sounds like one big off switch, but it's really a set of radios going quiet, and only one of them has to stay off.
Radio by radio
| Radio | In airplane mode | Can you switch it back on? |
|---|---|---|
| Mobile network (calls, SMS, 4G/5G data) | Off | Not without leaving airplane mode |
| Wi-Fi | Off on most phones | Yes, and in-flight Wi-Fi works this way |
| Bluetooth (earbuds, watch) | Off on most phones | Yes |
| GPS / location | Usually still works (receive only) | Location services stay on unless you turn them off |
| NFC (contactless pay) | Varies by phone | Often yes |
Exact behaviour varies by phone maker and software version. Always follow the crew's instructions on a flight; airlines and countries set their own rules.
Why GPS still works
A GPS receiver never transmits. It just listens to timing signals from satellites and works out where it is, so there's nothing to switch off for interference. Without mobile data the first fix can take longer (the phone can't download satellite position hints), and maps need to be downloaded in advance. The interactive GPS lesson shows how three satellites pin you down.
Does airplane mode save battery?
Yes, sometimes a lot. The mobile radio is one of the hungriest parts of a phone when the signal is weak, because it transmits harder and keeps searching for masts. In a basement, on a train through hills or in a remote spot, airplane mode (with Wi-Fi back on if you have it) can stretch a battery dramatically. With a strong signal at home, the saving is small. It's the same reason a phone drains faster when travelling.
Does it charge faster?
Slightly, because the phone is using less power while it charges. The bigger win is turning the screen off.
Can I still be reached?
Calls and texts don't arrive while the mobile radio is off; they go to voicemail or wait until you come back. If Wi-Fi is on, messaging apps and Wi-Fi calling (where your network supports it) can still get through. Emergency calls generally need you to leave airplane mode, and many phones offer to do that when you dial an emergency number.
Related
Car Bluetooth, CarPlay and Android Auto fixes · Bluetooth headphones cutting out · Wi-Fi vs mobile data battery · Does 5G drain the battery? · eSIM vs SIM for travel · Battery draining overnight · Mobile data running out fast · Power banks on planes · Power bank calculator
Questions
Can I use Wi-Fi in airplane mode?
Yes. Turn Wi-Fi back on after enabling airplane mode; the mobile radio stays off. In-flight Wi-Fi is designed to be used this way.
Does GPS work in airplane mode?
Usually yes. GPS only receives satellite signals, so location keeps working, although maps must be downloaded beforehand.
Do alarms work in airplane mode?
Yes. Alarms, timers, the camera and downloaded media don't need any radio.
Does airplane mode save battery?
Yes, most noticeably where the signal is weak, because the phone stops transmitting hard and searching for masts.
Published .