Simply visit Apple’s web tool, type in your iPhone’s serial number in the text field and click Submit to instantly see if you’re eligible for a free battery from Apple, saving you a trip to an Apple Store or authorized service provider.
You can find your device’s serial number on its back or in Settings → General → About.
“Apple store staff will be replacing batteries with spare parts where available, but otherwise will be sending out for battery replacement stock or in some cases replacing the entire device,†reads the article.
Apple is replacing the battery at no additional cost. However, the company notes that if your iPhone 6s has a cracked screen or any other damage that can affect the replacement of the battery, then that problem needs to be resolved first before the company can change the battery. Such repairs will not be covered by Apple and users would have to pay for them.
Those who have already paid for a battery replacement service should check with Apple to see if they are eligible for a refund.
