Comment on The Paradox of Blackmarket Wired Bluetooth Apple headphones.
MagicShel@programming.dev 6 months agoeven to the point of some phones not even turning off Wi-Fi when airplane mode is turned on
I didn’t know that part (the rest yes). So much for using airplane mode to conserve battery. I suppose it’s the tower handshake that is most energy hungry in my experience.
both wireless protocols can be activated and deactivated independently
100% although my comment was in the context of people who don’t really understand Bluetooth at all.
+1 for the rest, thanks.
Melody@lemmy.one 6 months ago
Your understanding is slightly off.
Airplane mode Does In Fact Turn off your CELLULAR Radio This radio is what powers your (2/3/4/5)G and LTE (This is 4G btw) connection to the cell towers.
Most international radio communications laws can prohibit the use of Cellular Radio in flight; however they often don’t prohibit the use of shorter range radio technologies such as WIFI or Bluetooth.
It’s all about ‘loudness’. Think about it. Your phone must ‘scream louder’ at a farther away cell tower than it would need to communicate with a nearby WiFi router or a Bluetooth headset.
BarryZuckerkorn@beehaw.org 6 months ago
Also, phones don’t use a lot of power to purely listen for Wifi beacons. They’re not transmitting until they actually try to join, so leaving wifi on doesn’t cost significant power unless you just happen to be near a remembered network.
Melody@lemmy.one 6 months ago
Your comment missed the mark entirely. Please don’t reply-guy me; I know what I’m talking about.
BarryZuckerkorn@beehaw.org 6 months ago
Not sure why you’re saying that. I wasn’t disagreeing with any of your points, but adding to them another angle that answered the parent comment’s concerns about whether leaving wifi on for airplane mode drains battery. You addressed the cellular radio side, and I was adding a separate point about the WiFi radio that complements what you were saying.