We're sorry to hear that you're experiencing issues with your Galaxy phone.
In this case, we recommend that you try resetting the settings on the phone (this is not the same as a factory reset).
You can read more about what is affected by this reset here:
- General management
- Reset all settings
Should the problem persist, I recommend that you create an error report and send it to us. This way our technicians can check the logs and diagnostics to try to figure out what the problem might be.
You can create a error report like this: Samsung's Members > Support > Error report.
I hope this solves the problem for you.