Some iPhone battery power issues are caused by factors other than the battery. If you can't turn on your iPhone, follow these steps to see if the issue resolves.
Our warranty covers a defective battery, but it doesn’t cover wear from normal use. If your iPhone needs battery replacement and it’s not covered.
If your iPhone replacement battery issue or a different power issue. It needs to identify your issue. If your iPhone comes with a low battery state of charge, a higher chemical age, or colder temperatures, users are more likely to experience unexpected shutdowns. The shutdowns can occur more frequently, thereby rendering the device unreliable or unusable.