When you plug earbuds into your phone, your phone is literally powering the earbuds. The cables transmit an electrical signal; they consume battery. The consumption is fairly negligible, of course, but so is modern Bluetooth.
I believe they meant that bluetooth headphones need to be charged, while wired ones just run off the phone's battery. Sure, the amount of power consumed might not be that different (though bluetooth will still be more), but its easier for the user to just charge one device.
Either your phone is straight up broken or your anecdotal measurements are way off. There is effectively no difference in battery life on a phone between using wired headphones and Bluetooth.
Cables doesn't consume battery not get affected by radio interference.
When you plug earbuds into your phone, your phone is literally powering the earbuds. The cables transmit an electrical signal; they consume battery. The consumption is fairly negligible, of course, but so is modern Bluetooth.
I believe they meant that bluetooth headphones need to be charged, while wired ones just run off the phone's battery. Sure, the amount of power consumed might not be that different (though bluetooth will still be more), but its easier for the user to just charge one device.
Sure, that should be why using BT my phone headphones, battery lasts 30-40% less 🤦🏻
Either your phone is straight up broken or your anecdotal measurements are way off. There is effectively no difference in battery life on a phone between using wired headphones and Bluetooth.