iPhone Duo, RTX Spark, a privacy-friendlier smart glasses: how much do you know about this week's gadget news?

A foldable iPhone, an Arm-based Nvidia chip, Apple's smart home line and more private smart glasses: six questions from this week's gadget news.

1. What does the Apple iPhone Duo's inner display use instead of face recognition?
2. What is the starting price of the Apple iPhone Duo's 256 GB base model?
3. According to IDC, what share of smartphones sold this year are foldables?
4. Which two companies developed Apple's new Apple Home Collection smart home line with Apple?
5. What architecture is Nvidia's new RTX Spark N1X laptop chip based on?
6. How do HTC's Vive Eagle smart glasses differ from Meta's devices?