Here is the fixes and improvements from iOS 13.1.3 software update for your iPhone
- Addresses an issue that could prevent a device from ringing or vibrating for an incoming call
- Fixes an issue that may prevent opening a meeting invite in Mail
- Resolves an issue where data in the Health app may not display correctly after daylight savings time adjusts
- Fixes an issue where Voice Memos recordings may not download after restoring from iCloud Backup
- Addresses an issue where apps might fail to download when restoring from iCloud Backup
- Fixes an issue that can prevent Apple Watch from pairing successfully
- Resolves an issue where notifications may not be received on Apple Watch
- Fixes an issue where Bluetooth may disconnect on certain vehicles
- Improves connection reliability of Bluetooth hearing aids and headsets
- Addresses launch performance for apps that use Game Center
For information on the security content of Apple software updates, please visit this website:
https://support.apple.com/kb/