The most convenient and reliable way to replace your iPhone’s battery is to do it straight through Apple. Simply swap out your old battery for a brand new one. For an iPhone 15, this costs $99. For ...

iFixit's kit comes with a third-party replacement battery that is not from Apple, since Apple does not sell its parts ...

Use Dark Mode: If your iPhone 12 has an OLED display, enabling Dark Mode can help save battery life. To turn on Dark Mode, go to Settings > Display & Brightness and choose Dark. Using a dark wallpaper ...