San Francisco, Sep 26 (IANS): Apple will display a warning on the iPhone 11, 11 Pro and 11 Pro Max if the devices are unable to verify a genuine display after a screen repair job.

The iPhone maker said that a notification would appear on the affected iPhone's lock screen for four days after a problem is first detected. Then it would move to the main settings menu for 15 more days. After that, it gets pushed away to Settings -> General -> About.

"Replacements not performed by Apple authorized service providers or certified technicians might not follow proper safety and repair procedures and could result in improper function or issues with display quality or safety. Apple displays are designed to fit precisely within the device," the company said in a post.

Additionally, repairs that don't properly replace screws or cowlings might leave behind loose parts that could damage the battery, cause overheating or result in injury.

The Cupertino-headquartered firm recently unveiled these three iPhones at its event in California.

All the iPhones, which are upgrades over last year's iPhone XR, iPhone XS and iPhone XS Max, will ship with the iOS 13, the latest operating system from Apple.

All the Apple products will go on sale in India on Friday in both online and offline stores.