TrendForce predicts Apple's iPhone Duo will capture 24.8% of the foldable smartphone market in 2026 with 5 million unit shipments, offsetting a broader 20% decline in the segment. Samsung is expected to lead with 35.1% share, while Huawei matches Apple's volume. Apple's design prioritizes thinness by omitting periscope telephoto and using side-mounted Touch ID instead of Face ID.