On the listed US base prices, the Samsung Galaxy Z Fold8 Ultra costs $2,099 and the OnePlus 15 costs $899—a $1,200 difference. The choice is less about two phones with similar designs and more about whether you want a conventional smartphone or a book-style foldable with a much larger screen when opened. These are published MSRP figures, not guaranteed current local prices.
Price difference: $1,200 at the listed base MSRP
PhoneArena lists the OnePlus 15 with 12GB of memory and 256GB of storage at $899 MSRP. It lists the Galaxy Z Fold8 Ultra at $2,099 for 12GB/256GB, $2,299 for 12GB/512GB, and $2,699 for 16GB/1TB. Comparing the two base configurations, the Samsung is $1,200 more. Tom’s Guide also reports a $2,099 starting price for the Fold8 Ultra.
| # | Preview | Product | Price | |
|---|---|---|---|---|
| 1 |
|
OnePlus 15R, 12GB RAM + 512GB Storage, Dual-SIM, Unlocked Android Smartphone, Snapdragon 8 Gen 5,... | $849.00 | Buy on Amazon |
As an Amazon Associate I earn from qualifying purchases.
These figures are published US MSRP, not a promise of what you will pay today. Discounts, carrier offers, stock, country, and local configurations can change the transaction price. Check the live price and warranty terms in your market before comparing offers. PhoneArena’s comparison; Tom’s Guide’s Fold8 Ultra review.
Recommended Free Tools
Specifications at a glance
| Specification | OnePlus 15 | Samsung Galaxy Z Fold8 Ultra |
|---|---|---|
| Form factor | Conventional smartphone | Book-style foldable |
| Display | 6.8 inches, as listed by PhoneArena | 8.0-inch inner display and 6.5-inch cover display, both up to 120Hz, according to Samsung |
| Listed battery capacity | 7,300mAh, as listed by PhoneArena | 5,000mAh, as listed by PhoneArena |
| Weight | 211g, as listed by PhoneArena | 215g, according to Samsung |
| Base configuration and listed US MSRP | 12GB/256GB — $899 | 12GB/256GB — $2,099 |
| Other listed configurations | Not stated by PhoneArena’s comparison | 12GB/512GB — $2,299; 16GB/1TB — $2,699 |
OnePlus specifications and prices in this table are third-party listings from PhoneArena, not independently verified manufacturer specifications. Samsung’s display and weight details are supported by its product announcement. Figures and configurations can vary by region. PhoneArena comparison; Samsung product announcement.
#1 Best Overall
- World's First Snapdragon 8 Gen 5: Powered by the Snapdragon 8 Gen 5, plus a custom Wi-Fi chip and dedicated Touch Response chip, you get lightning-fast speeds, stable connections, and ultra-responsive touch control.
- Impossibly Smooth 165Hz Display: Experience extreme smoothness on a 165Hz, 1.5K flagship display powered by our 3200Hz Touch Response Chip for lightning-fast interactions.
- Our largest-ever 7,400mAh battery:Power up your day with 80W SUPERVOOC charging for power that last all day and beyond.
- Industry's Most Complete IP Ratings:Backed by the industry's most complete IP ratings, the OnePlus 15R doesn't even blink at dust storms, and shrugs off powerful water blasts.
- OxygenOS 16 delivers a faster, smoother, and more intuitive experience, with refined design, smarter features, and enhanced performance that keeps up with your day.
What the different form factors mean in daily use
OnePlus 15: a conventional phone
The OnePlus 15 is the more straightforward fit if you want a single-screen smartphone. PhoneArena lists its display at 6.8 inches, battery capacity at 7,300mAh, and weight at 211g. Those capacity and weight figures are listing data; battery capacity alone does not establish how long a phone lasts in everyday use.
Galaxy Z Fold8 Ultra: a phone that opens into a larger workspace
When closed, the Fold8 Ultra has a 6.5-inch cover display; unfolded, its 8.0-inch inner display offers more room for reading, multitasking, and video. Both displays are specified by Samsung as supporting up to 120Hz. That larger canvas is the main practical reason to consider paying more: it changes how much content fits on screen, rather than simply offering another conventional phone display.
Samsung announced the Fold8 Ultra on July 22, 2026. Its August 6 launch release said sales began August 7 in select markets, with global expansion to follow; availability depends on country and retail channel. Samsung also reported that pre-orders for its new Galaxy Z lineup rose by more than 30% versus the previous generation. That is Samsung’s reported lineup-wide figure, not an independently audited sales measure. Samsung’s announcement; Samsung’s launch release.
Battery, weight, and the limits of spec-sheet comparisons
PhoneArena lists a larger battery capacity for the OnePlus 15—7,300mAh versus 5,000mAh for the Fold8 Ultra. That is a capacity comparison, not a direct battery-life result: screen size, software, network conditions, and usage all affect runtime. Tom’s Guide reports 14 hours 33 minutes for the Fold8 Ultra in its own web-surfing-over-5G battery test. Treat that as a publication-specific test result, not a guaranteed runtime for every user or network. Tom’s Guide review.
The listed weights are close: PhoneArena gives the OnePlus 15 as 211g, while Samsung specifies 215g for the Fold8 Ultra. Similar weight does not mean identical handling: the foldable has a different closed shape and thickness, while its larger opened display is part of what the extra cost buys. The figures alone do not establish which device will feel more comfortable in your hand or pocket.
Which one should you choose?
- Choose the OnePlus 15 if you prefer a conventional smartphone and the lower listed base price matters more than having an unfolding display.
- Consider the Galaxy Z Fold8 Ultra if you expect to use the larger inner screen for reading, multitasking, or media often enough to justify the listed $1,200 premium over the OnePlus base MSRP.
- Before buying either, compare live prices for the same storage tier, check availability and carrier compatibility in your country, and confirm local warranty coverage. For battery decisions, distinguish published capacity from a test result and from your own likely usage.
PhoneArena identifies the OnePlus 15 as released October 28, 2025; that date is secondary-source information. Samsung’s cited announcements provide the Fold8 Ultra’s 2026 announcement and market-dependent launch timing. PhoneArena comparison.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
Do these 3 things before closing this tab:
1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitches
