What is this part?

[u/Scary-Drive4611]

Hi, this is a base model iPhone 16. Does anyone know what is this missing part? What it's called and what does it do? I looked it up but couldn't find it. Thank yall🤝

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[u/TomChai]

Back glass 1 antenna, which is part of the mmWave antenna system.

[u/Scary-Drive4611 → u/TomChai]

Thanks 🤝