iPhone SE2 automatically lowers the volume when you connect headphones

Hello Luc1e,

Thanks for posting in Apple Support Communities. This may be due to your settings. The following setting mentioned in Check your headphone audio levels on iPhone - Apple Support should change this behavior.

"Reduce loud headphone sounds

1. Go to Settings  > Sounds & Haptics, then tap Headphone Safety.
2. Turn on Reduce Loud Sounds, then drag the slider.
3. iPhone analyzes your headphone audio and reduces any sound above the level you set"

Take care.

Hi Luc1e,

We appreciate those additional details. Next, ensure your iPhone is running the latest version of iOS, 17.0.3. This installs feature improvements and fixes that can resolve unexpected behavior like this. These steps from Update your iPhone or iPad show how to back up and update:

1. Back up your device using iCloud or your computer.

2. Plug your device into power and connect to the internet with Wi-Fi.

3. Go to Settings > General, then tap Software Update.

4. If you see more than one software update option available, choose the one that you want to install.

5. Tap Install Now. If you see Download and Install instead, tap it to download the update, enter your passcode, then tap Install Now. If you don't know your passcode, learn what to do.

If this continues after updating your iPhone, then reach out to Apple Support. They would be the best equipped to look into this issue further with you. Contact them here: Get Support

Cheers!