When you replace the battery of iPhone 11 or 12 series with a genuine battery or a third-party repair battery, there will be the message "Unable to verify this iPhone has a genuine Apple battery" and "Health information not available for this battery" on the iPhone (As shown in the picture below), it means that the battery in the device cannot be verified as a genuine product, and the maximum capacity will not display the percentage.
Today let me show you how to fix step by step as below
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