I need to replace my iPhone 8 battery

Click on this link about 'iPhone Battery and Performance' to read about the battery health feature and what is considered normal performance --> https://support.apple.com/HT208387

- Requires iOS 11.3 and for iPhone 6 and newer iPhones only, not iPad or Watch.

Click on this link to read 'About Optimized Battery Charging on your iPhone' --> https://support.apple.com/HT210512

- With iOS 13 and later, your iPhone learns from your daily charging habits to improve the lifespan of your battery.

- Settings > Battery > Battery Health > Optimized Battery Charging

Click on the link to read 'About the battery and performance of iPhone 11 and later' --> https://support.apple.com/HT210557

- About performance as batteries age

- Check battery health on your iPhone

How to find your nearest Apple Authorized Service Provider (AASP) or Apple Authorized Distributor (AAD) - https://locate.apple.com/country

Genius Bar appointment - This is tricky to get to directly. Go to https://www.apple.com/retail/geniusbar/ > Get hardware help. Select your hardware and continue selecting options requiring replacing parts until you see "Bring in for Repair" --> Sign in with Apple ID

If your iPhone 8 battery does not have a battery health at 80% or below, Apple will not replace it, unless it fails another battery system check.