Apple has announced a service program for iPhone 12 and iPhone 12 Pro users who are facing issues with their speaker devices.
Apple concluded that a "small percentage" of 6.1-inch iPhone 12 devices have a problem where no sound is coming from the earpiece during phone calls. Apple will replace the faulty module for free. This does not apply to iPhone 12 Mini or iPhone 12 Pro Max.
Apple says that some devices manufactured between October 2020 and April 2021 may experience ‘no sound issues’ on calls due to speaker components that fail. The program covers eligible phones for 2 years since the day of purchase and Apple may restrict or limit repair to the original country or region of purchase.
In a support document, Apple says: Apple has determined that a very small percentage of iPhone 12 and iPhone 12 Pro devices may experience sound issues due to a component that might fail on the receiver module. Affected devices were manufactured between October 2020 and April 2021.
If your iPhone 12 or iPhone 12 Pro does not emit sound from the receiver when you make or receive calls, it may be eligible for service.
Apple and Apple Authorized Service Providers will provide the service free of charge. Users with speaker issues need to make an appointment with an Apple Retail Store, Authorized Service Provider, or contact Apple Support for mail-in service.
Apple advises users to back up their data either to iCloud or to a computer before their appointment. In addition, Apple won't service earpieces on iPhones that have damaged displays and will require that it's fixed before it will fix the earpiece issue.