What are the most exciting features that are (potentially) coming to phones in 2021?

Choose one answer:
Periscopes with variable focal legnth
High resolution sensors
Rollable phones
Tough, bendable glass for foldable/rollable phones
Nvidia-designed GPU cores for phones
New uses for Ultra Wideband
Cheap foldable phones (for real this time)
Under display cameras (on more than one model)
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What are the most exciting features that are (potentially) coming to phones in 2021?

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