Apple on Monday announced a new repair program to address issues where “a very small number” of iPhone 6s devices manufactured between September and October 2015 may unexpectedly shut down. The issue is apparently caused by a faulty battery, which Apple will replace free of charge if your iPhone 6s is affected. The program covers affected iPhone 6s batteries for three years after the first retail sale of the unit and may restrict or limit repair to the original country of purchase.
Apple launches repair program for unexpected shutdown issues on iPhone 6s