OnePlus 15 vs Samsung Galaxy S26 Ultra
A spec-by-spec comparison of the OnePlus 15 and the Samsung Galaxy S26 Ultra, taken from their full specification sheets. Green marks the better value in each measured row.
VS
Head to head
| OnePlus 15 | Samsung Galaxy S26 Ultra | |
|---|---|---|
| Our rating | 9/10 | 9/10 |
| Battery | 7,300 mAh | 5,000 mAh |
| Wired charging | 120W | 60W |
| RAM (max) | 24 GB | 12 GB |
| Storage (max) | 512 GB | 512 GB |
| Screen size | 6.78 in | 6.9 in |
| Refresh rate | 165 Hz | 120 Hz |
| Main camera | 50 MP | 200 MP |
| Weight (lower is lighter) | 211 g | 214 g |
| Released | Nov 2025 | Mar 2026 |
Summary: OnePlus 15 is ahead on battery, wired charging, ram (max), refresh rate. Samsung Galaxy S26 Ultra is ahead on screen size, main camera.
Display
| OnePlus 15 | Samsung Galaxy S26 Ultra | |
|---|---|---|
| Type | Flat LTPO AMOLED, 1B colors, 165Hz, HDR10+, Dolby Vision | Dynamic LTPO AMOLED 2X, 120Hz, HDR10+, 2600 nits (peak) |
| Size | 6.78 inches, 111.7 cm2 (~90.9% screen-to-body ratio) | 6.9 inches, 115.9 cm2 (~90.7% screen-to-body ratio) |
| Resolution | 2772 x 1272 pixels, 20:9 ratio (~450 ppi density) | 1440 x 3120 pixels, 19.5:9 ratio (~500 ppi density) |
| Brightness | 1800 nits (HBM), 4500 nits (peak) | — |
| Protection | Corning Gorilla Glass Victus 3 | Corning Gorilla Armor 2 |
| Features | Aqua Touch 2.0, RadiantView, Intelligent Eye Care 4.0 | Privacy Display |
Platform
| OnePlus 15 | Samsung Galaxy S26 Ultra | |
|---|---|---|
| OS | Android 16, OxygenOS 16 (International) / ColorOS 16 (China) | Android 16, One UI 8.5 |
| Chipset | Qualcomm Snapdragon 8 Elite Gen 5 (4 nm) | Qualcomm Snapdragon 8 Elite Gen 5 (3 nm) for Galaxy |
| CPU | Octa-core (1xX6 + 3xA7xx + 2xA7xx + 2xA5xx) | Octa-core (details not specified, assumed high-performance) |
| GPU | Adreno 8xx | Adreno (details not specified, assumed high-performance) |
Memory
| OnePlus 15 | Samsung Galaxy S26 Ultra | |
|---|---|---|
| Card slot | No | No |
| Internal | 256GB 12GB RAM, 512GB 16GB RAM, 1TB 24GB RAM | 256GB 12GB RAM, 512GB 12GB RAM, 1TB 12GB RAM |
| Type | UFS 4.1 | — |
Main Camera
| OnePlus 15 | Samsung Galaxy S26 Ultra | |
|---|---|---|
| Triple | 50 MP, f/1.6, 23mm (wide), 1/1.28", 1.22µm, multi-directional PDAF, OIS (Sony IMX906) 50 MP, f/2.0, 15mm, 120˚ (ultrawide), PDAF 50 MP, f/2.6, 73mm (periscope telephoto), 1/1.95", 3x optical zoom, PDAF, OIS | — |
| Features | DetailMax Engine, Hasselblad Color Calibration, Dual-LED flash, HDR, panorama | LED flash, auto-HDR, panorama, Nightvideography |
| Video | 4K@30/60/120fps (Dolby Vision), 1080p@30/60/240fps, gyro-EIS, OIS | 8K@30fps, 4K@30/60/120fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS |
| Quad | — | 200 MP, f/1.4, 85˚ (wide), PDAF, Laser AF, OIS; 50 MP, f/1.9, 120˚ (ultrawide); 50 MP, f/2.9 (telephoto), 10x optical zoom; 10 MP, f/2.4 (telephoto), 3x optical zoom |
Selfie Camera
| OnePlus 15 | Samsung Galaxy S26 Ultra | |
|---|---|---|
| Single | 32 MP, f/2.4, 22mm (wide), 1/2.74", 0.8µm | 12 MP, f/2.2 (wide), PDAF |
| Features | HDR | Dual video call, Auto-HDR, AI ISP |
| Video | 4K@30/60fps, 1080p@30/60fps, gyro-EIS | 4K@30/60fps, 1080p@30fps |
Battery
| OnePlus 15 | Samsung Galaxy S26 Ultra | |
|---|---|---|
| Type | Silicon NanoStack, 7300 mAh, non-removable | Li-Ion 5000 mAh, non-removable |
| Charging | 120W wired, 1-100% in 26 min (advertised), 50W wireless, 1-100% in 55 min (advertised), 10W reverse wireless | 60W wired (75% in 30 min), 15W wireless (Qi/PMA), 4.5W reverse wireless |
Body
| OnePlus 15 | Samsung Galaxy S26 Ultra | |
|---|---|---|
| Dimensions | 161.4 x 76.7 x 8.1 mm (Sand Storm) / 8.2 mm (Infinite Black/Ultra Violet) | 163.6 x 78.1 x 7.9 mm (6.44 x 3.07 x 0.31 in) |
| Weight | 211 g (Sand Storm) / 215 g (Infinite Black/Ultra Violet) | 214 g (7.55 oz) |
| Build | Aerospace-grade nano-ceramic construction (back), metal frame (Sand Storm: aerospace-grade micro-arc oxidation metal body), Glass front (Gorilla Glass Victus 3) | Glass front (Corning Gorilla Armor 2), glass back, aluminum frame (assumed) |
| SIM | Dual SIM (Nano-SIM, dual stand-by) | — |
| Other | Programmable Plus Key (replaces Alert Slider), IP68/IP69 dust/water resistant | — |
Comms
| OnePlus 15 | Samsung Galaxy S26 Ultra | |
|---|---|---|
| WLAN | Wi-Fi 802.11 a/b/g/n/ac/6e/7, dual-band, Wi-Fi Direct | Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct |
| Bluetooth | 5.4, A2DP, LE, aptX HD | 6.0, A2DP, LE |
| Positioning | GPS (L1+L5), GLONASS (G1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5) | GPS, GLONASS, BDS, GALILEO |
| NFC | Yes | Yes |
| Radio | No | No |
| USB | USB Type-C 3.2, OTG | USB Type-C 3.2, OTG |
Launch
| OnePlus 15 | Samsung Galaxy S26 Ultra | |
|---|---|---|
| Announced | 2025, October 27 (China) | 2026, February 25 |
| Status | Available. Released 2025, November 13 (Global) | Available. Released 2026, March 11 |
Frequently asked questions
Which has the better battery, OnePlus 15 or Samsung Galaxy S26 Ultra?
OnePlus 15 — 7,300 mAh for the OnePlus 15 versus 5,000 mAh for the Samsung Galaxy S26 Ultra.
Which has more RAM, OnePlus 15 or Samsung Galaxy S26 Ultra?
OnePlus 15 — 24 GB for the OnePlus 15 versus 12 GB for the Samsung Galaxy S26 Ultra.
Which has the smoother screen, OnePlus 15 or Samsung Galaxy S26 Ultra?
OnePlus 15 — 165 Hz for the OnePlus 15 versus 120 Hz for the Samsung Galaxy S26 Ultra.
Which is lighter, OnePlus 15 or Samsung Galaxy S26 Ultra?
OnePlus 15 — 211 g for the OnePlus 15 versus 214 g for the Samsung Galaxy S26 Ultra.
Which is newer, OnePlus 15 or Samsung Galaxy S26 Ultra?
Samsung Galaxy S26 Ultra — Nov 2025 for the OnePlus 15 versus Mar 2026 for the Samsung Galaxy S26 Ultra.
Is the OnePlus 15 or the Samsung Galaxy S26 Ultra rated higher?
We rate the OnePlus 15 9/10 and the Samsung Galaxy S26 Ultra 9/10.