In rare cases, the issue is caused by system errors or bugs. However, that doesn't mean it is impossible. If the previous solutions fail to work out, you can fix your phone with Joyoshare UltFix.
It is a system recovery tool that aims to resolve 30+ issues on almost all models of iPhone, iPad, iPod and Apple TV. It surpasses other competitors in that it is able to fix the problem without data loss. Problems like the iPhone not ringing issue, can be solved without damaging your personal data. Its free service of putting your iPhone into the recovery mode with one-click really increases the efficiency and convenience.
Key Features of Joyoshare UltFix iOS System Recovery
Solve the iPhone no sound issue with no data loss
Compatible with iOS 13 and almost all Apple Devices
Fix iOS issues with several clicks easily
Usher your iPhone into the recovery mode free of charge