1. The iphone8 does not need to be charged for 12 hours for the first time, it can be full, but remember that it is best to charge when the screen prompts 10% for the first time, and do not run out of power.
2. After that, it can be charged under any power, and it is not necessary to wait until the power prompt is too low.
3. It is best to have a complete charging and discharging process every week. If not weekly, make sure your iphone8 goes through a charging cycle at least once a month to increase the battery's capacity.
4. Although the iphone8 also has overshoot protection, it is still recommended to avoid charging for too long, especially overnight charging. Because the charging time is too long, the service life of the battery will be greatly shortened.
The battery life of the iPhone8 is basically the same as that of the 7, but there is no mention of whether it supports fast charging.
According to the data on the official website, the iPhone8 can be charged up to 50% power in 30 minutes, and it is specially marked with a text - built-in lithium-ion rechargeable battery, wireless charging (for all kinds of Qi charger 10), charging through the USB port or power adapter of the computer, fast charging. This means that the iPhone8 finally supports fast charging.
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As for how long it takes for the iPhone8 to charge for the first time, it is recommended to keep your phone power above 15%, which helps to extend the battery life, because the Apple 8 is equipped with a lithium-ion battery, so the first charge and each charge after it is charged at about 15%-20% of the remaining power.