IPhone lightning headphones issue?

I recently bought a pair of Bluetooth headphones. They're no wireless. But they connect through Bluetooth and won't play otherwise. The issue is, they work fine at home but the minute I go outside and off my front doorstep. They start to beep really loudly and then the volume goes all the way down but the music doesn't Stop playing. If I turn the music back up it goes straight back down. I don't understand the issue. Other headphones don't do this. Is it a settings problem?

I'm confused.

Bluetooth is a (formerly) wireless standard IEEE 802.15 connection method.

For headphones, there are two "types" of Blue Tooth headphones. Earbuds and everything else.

Neither type connects to a port on a phone using a wire. They connect using Bluetooth (wireless).

Bluetooth is a "personal area network" technology. The typical range between the "user device" (in this case, earphones) and the source (in this case, your iPhone) is about 20 feet - assuming there are no obstructions (walls, doors, windows, etc.) between the two devices.

It is possible that when the signal starts getting weak (because the devices are too far apart, obstacles are blocking the signal), the earphones can make noise to remind you that you are at the edge of the signal range. This is to remind you to get back to the audio source device. If this is the case, then carry the iPhone in your pocket and don't leave it inside your house.

If something else is going on, we don't know… So please provide the manufacturer name and model of the headset you are using… At the moment, using "wired Bluetooth" makes no sense to me.

Stay close to Wi-Fi… Duh