Ringer on iPhone 11 Pro keeps turning off spontaneously

Hi sders,

No problem. Thanks for letting us know those details, as we can rule them out as possible causes. Let's now Restart your iPhone.

If the issue remains afterwards, we recommend contacting Apple main support here: Get Support

Take care!

Hey there sders,

Being able to know when you get calls is important, and we'd like to help get it working right.

You mentioned that you made sure it's set to 'Ringer', but it turns itself to 'Silent'. We'd like to rule out the switch itself by ruling out any coverings on your iPhone, and if the switch itself is physically changing from Ringer to Silent, as this may be an issue with the switch. Please keep us posted on these details.

Let's also make sure that we rule out being outdated as a possible cause:

1. As iOS 14.2 is the latest version, you can check which version is installed within Settings > General > About.
2. Let's also make sure to Update your carrier settings on your iPhone or iPad.