How can I find out if my iphone se 2nd generation supports or uses VoLTE?

Yes, the iPhone SE 2nd generation supports VoLTE (Voice over LTE), which allows for better call quality and faster call setup times.

To check if your iPhone SE 2nd generation is using VoLTE, follow these steps:

1. Open the Settings app on your iPhone.
2. Tap on "Cellular."
3. Tap on "Cellular Data Options."
4. If VoLTE is available for your carrier, you should see "Voice & Data" as an option. Tap on it and make sure that "LTE" is selected. This means that your iPhone will use VoLTE when it's available.

Note that VoLTE availability may depend on your carrier and location, so it's possible that it may not be available in certain areas or on certain carriers.

If you want to turn off VoLTE on your iPhone SE 2nd generation, simply go back to the "Voice & Data" option and select "Data Only" instead of "Voice & Data." This will turn off VoLTE and your iPhone will use 3G or 2G for voice calls instead.

iPhone SE 2020 definitely supports VoLTE.

You can check if VoLTE is activated here:

Settings > Cellular > Mobile Data Options > Voice & Data. At the bottom you can see if VoLTE is activated.

Screenshot from my iPhone SE 2020: