Apple is now replacing batteries for some iPhone 6s models. According to the company, a fault with the battery is causing a “very small number” of handsets to randomly shut down.
If you have iPhone 6s that was manufactured between September and October 2015, then you’re eligible for a replacement. You can contact your local authorized service provider or Apple Store. If you qualify, you’ll get a replacement device. Apple will also refund those, who already paid for a battery replacement.
Recently, there was “Touch Disease” issue with some iPhone 6 Plus models, where a flickering gray bar appears across the top of the screen and multitouch issues render the device unusable until fully repaired.