OnePlus 15 vs Samsung Galaxy S23 Ultra
The OnePlus 15 scores 9.4 in our rating, and the Samsung Galaxy S23 Ultra scores 7.8. The OnePlus 15 leads in display, performance, battery, design, software support and value for money, while the Samsung Galaxy S23 Ultra is ahead in camera. At launch in the US, the OnePlus 15 cost $300 less ($899.99 vs $1,199.99). The OnePlus 15 is the newer phone, announced Oct 27, 2025.
Key differences
Why choose the OnePlus 15
- Bigger battery 7,300 mAh vs 5,000 mAh
- Silicon-carbon battery
- Faster wired charging 120 W vs 45 W
- Higher refresh rate 165 Hz vs 120 Hz
- Better water resistance IP68 + IP69K vs IP68
- Lower launch price $899.99 vs $1,199.99
Why choose the Samsung Galaxy S23 Ultra
- Bigger screen 6.8 inches vs 6.78 inches
- Longer optical zoom 10× vs 3.5×
- More storage 256 GB / 512 GB / 1 TB vs 256 GB / 512 GB
- Higher screen resolution 1440 × 3088 px vs 1272 × 2772 px
- Sharper display 500 ppi vs 450 ppi
- Reverse wireless charging
PhoneRanked scores
Calculated from specs, relative to phones from the same year and price range. How we rate phones
Spec
OnePlus 15Samsung Galaxy S23 Ultra
Overall
9.4
7.8
Display
8.9
8.1
Performance
9.0
6.8
Camera
8.4
8.7
Battery
8.5
5.9
Design
8.8
8.3
Software support
7.4
6.9
Value for money
7.6
4.4
Display
Spec
OnePlus 15Samsung Galaxy S23 Ultra
Size
6.78 inches
6.8 inches
Type
OLED
OLED, Dynamic AMOLED 2X
Resolution
1272 × 2772 px
1440 × 3088 px
Pixel density
450 ppi
500 ppi
Refresh rate
165 Hz
120 Hz
Adaptive refresh
✓ Yes
✓ Yes
Peak brightness
—
1,750 nits
HDR
HDR10+, HDR Vivid
HDR10+
Protection
Gorilla Glass Victus 2
Corning Gorilla Glass Victus 2
Performance
Spec
OnePlus 15Samsung Galaxy S23 Ultra
Process
3 nm
4 nm
Max CPU clock
4.61 GHz
3.36 GHz
GPU
Adreno 840
Adreno 740
RAM
12 GB / 16 GB
8 GB / 12 GB
Storage
256 GB / 512 GB
256 GB / 512 GB / 1 TB
Storage type
UFS 4.1
UFS 4.0
microSD slot
✕ No
✕ No
Cameras
Spec
OnePlus 15Samsung Galaxy S23 Ultra
Main camera
50 MP, f/1.8
200 MP, f/1.7
Optical stabilization
✓ Yes
✓ Yes
Ultrawide
50 MP
12 MP
Telephoto
50 MP, 3.5× optical
10 MP, 10× optical, periscope
Optical zoom
3.5×
10×
Rear cameras
3
4
Rear video
8K@30
8K@30
Front camera
32 MP
12 MP
Front video
4K@60
4K@60
Battery and charging
Spec
OnePlus 15Samsung Galaxy S23 Ultra
Capacity
7,300 mAh
5,000 mAh
Battery type
Silicon-carbon
Li-Ion
Wired charging
120 W
45 W
Wireless charging
50 W
15 W
Reverse wireless
✕ No
✓ Yes
Charger in box
✓ Yes
✕ No
Design and build
Spec
OnePlus 15Samsung Galaxy S23 Ultra
Dimensions
161.42 × 76.67 × 8.1 mm
163.4 × 78.1 × 8.9 mm
Thickness
8.1 mm
8.9 mm
Weight
211 g
234 g
Form factor
Bar
Bar
Frame
—
Aluminum
Back
Fiberglass
Glass
Water resistance
IP68 + IP69K
IP68
Fingerprint
Under-display ultrasonic
Under-display ultrasonic
3D face unlock
✕ No
✕ No
SIM
Dual Nano-SIM + eSIM
Dual Nano-SIM + eSIM
Colors
Sand Storm, Infinite Black, Ultra Violet
Phantom Black, Cream, Green, Lavender, Graphite, Lime, Sky Blue, Red
Connectivity and features
Spec
OnePlus 15Samsung Galaxy S23 Ultra
5G
✓ Yes
✓ Yes
Wi-Fi
Wi-Fi 7
Wi-Fi 6E
Bluetooth
6.0
5.3
USB
USB-C 3.x
USB-C 3.x
NFC
✓ Yes
✓ Yes
3.5 mm jack
✕ No
✕ No
Stereo speakers
✓ Yes
✓ Yes
Satellite
✕ No
✕ No
IR blaster
✓ Yes
✕ No
Software
Spec
OnePlus 15Samsung Galaxy S23 Ultra
OS at launch
Android 16
Android 13
Interface
OxygenOS 16
One UI 5.1
OS updates
4 years
4 years
Security updates
6 years
5 years
Launch and price
Spec
OnePlus 15Samsung Galaxy S23 Ultra
Announced
Oct 27, 2025
Feb 1, 2023
Released
—
Feb 17, 2023
Status
Released
Discontinued
US launch price
$899.99
$1,199.99
Green marks the stronger value in a row. Specs come from official manufacturer data, cross-checked with established tech media; each phone page lists its sources. Report an error
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