Some Apple iPhone 6S and iPhone 6S Plus handsets may not power on due to a failed component, and Apple is offering to repair the devices for free.

Apple on Friday said that the affected iPhone 6s and iPhone 6s Plus models have been manufactured between October 2018 and August 2019. A free repair program for users who are affected is provided by the company.

Apple said the issue is related to a failed part.

If you believe you have experienced this issue, use the serial number checker in this page to see if your iPhone 6s or iPhone 6s Plus is eligible for repair.

The iPhone 6s line originally went on sale in September 2015, but was officially discontinued in September 2018. Still, Apple continued producing some iPhone 6s models for sale in select markets, including India.

Earlier this year, Apple opened repair or recall programs for the old 15-inch MacBook Pro’s battery, some wall adapters, the 13-inch MacBook Pro display back light, MacBook keyboards, and screens on the Apple Watch Series 2 and Series 3.