Samsung Galaxy Z Fold 8 Ultra Streaming Test: Does the Massive Screen Actually Improve the Viewing Experience?
We put the Samsung Galaxy Z Fold 8 Ultra to the test against the iPhone 17 Pro Max to see if its massive foldable screen actually improves movie and TV streaming.

The Foldable Dilemma: Screen Size vs. Aspect Ratio
In the world of mobile entertainment, the general consensus is that bigger is better. However, a large screen is only an advantage if its dimensions align with the content being consumed. For standard smartphones and tablets, this is rarely an issue. But for foldable devices like the Samsung Galaxy Z Fold 8 Ultra, the unconventional shape introduces a complex challenge: how much of that expensive real estate is actually being used, and how much is simply wasted black space?
After weeks of rigorous testing, the results reveal a nuanced picture. While the Z Fold 8 Ultra offers an expansive canvas, the experience varies wildly depending on whether you are using the cover display or the main foldable screen, and whether you hold the device in portrait or landscape mode.
The Methodology: Measuring the 'Waste'
To move beyond subjective 'vibes,' this test involved precise physical measurements of the active video area versus the total available screen space. By calculating the square inch usage across various content types, we can determine the efficiency of each viewing mode. The Z Fold 8 Ultra was pitted against the iPhone 17 Pro Max to provide a benchmark for traditional slab-style flagship displays.
The test library included a diverse range of aspect ratios:
- Cinematic Widescreen (2.39:1): "X-Men" and "Avengers: Endgame"
- Modern TV/Streaming (16:9): "The Emperor's New Groove" and "X-Men-97"
- Classic Television (4:3): "Scrubs"
- Vertical Content (9:16): TikTok feeds
Comparing the Viewing Experiences
1. The Cover Display: The Traditionalist's Choice
The Z Fold 8 Ultra's cover display is narrower than most standard phones, which creates unique results. Interestingly, some content—like the standard edition of "Avengers: Endgame"—filled 100% of the cover screen, appearing larger than it did on the iPhone 17 Pro Max despite the iPhone having more total screen area. However, this efficiency is inconsistent; YouTube's implementation of certain titles often preserves black bars, wasting nearly half the screen.
2. The Foldable Display in Portrait Mode: The Efficiency Gap
When unfolded in portrait mode, the device becomes a massive tablet-like surface. However, this is where the 'waste' becomes most apparent. Most cinematic content struggles here, with "Avengers: Endgame" using only about 37% of the available space. Vertical content like TikTok also suffers, as the width of the unfolded screen forces the video to be shorter and wider than on a traditional phone, resulting in roughly 55% screen utilization.
3. The Foldable Display in Landscape Mode: The Sweet Spot
Landscape mode is the clear winner for most media. Not only does this orientation provide the largest overall video size, but it also strategically hides the display crease beneath the content, making it nearly invisible. For 4:3 content like "Scrubs," this mode is a revelation, utilizing over 83% of the screen. Even cinematic releases fare better here, though they still leave significant black bars on the sides due to the device's height.
The Verdict: Who is the Z Fold 8 Ultra For?
The Samsung Galaxy Z Fold 8 Ultra is a powerhouse of hardware, but it isn't a perfect fit for every type of viewer. If you are a heavy consumer of TikToks and vertical shorts, the traditional slab of the iPhone 17 Pro Max remains superior. If you are bothered by 'letterboxing' (black bars), the oddly shaped foldable screen may be frustrating.
However, for those who enjoy classic TV shows or want a portable, cinematic experience that hides the crease, the landscape foldable mode is unmatched. The Z Fold 8 Ultra transforms from a phone into a mini-cinema, provided you are willing to navigate the quirks of aspect ratio mismatches. For the ultimate viewing experience, a dedicated tablet is still the gold standard, but for a device that fits in your pocket, the Z Fold 8 Ultra offers a compelling, if occasionally wasteful, alternative.