Hi Erngnd,
You mentioned that your iPhone was running iOS 13.1.2. iOS 13.2 has been released. Keeping your iPhone up-to-date ensures that you have the latest security updates and performance enhancements. If you decide to update your iPhone be sure to create a backup of your iPhone data. Having a backup of your data is like having an insurance policy, you don’t plan on using it, but it’s great to have if you need it. Here’s how to back up your iPhone: How to back up your iPhone, iPad, and iPod touch.
Once the backup is complete, please install the update. You can update your iPhone using either wireless over-the-air updating or update using your computer: Update your iPhone, iPad, or iPod touch.
If the issue persists after installing iOS 13.2, Contact Apple Support for more assistance.