Does the iPhone 7 version have internal passive antennas to boost cell signal & counteract any signal interference caused by the case or battery?

Does the iPhone 7 version have internal passive antennas to boost cell signal & counteract any signal interference caused by the case or battery? Nothing from apple but I've read in a few articles the 6/6s version does have them.

Apple iPhone 7 Smart Battery Case

Apple iPhone 7 Smart Battery Case

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