Samsung Galaxy S21 Ultra 5G (12GB RAM + 128GB) vs OnePlus 15
Here you can compare Samsung Galaxy S21 Ultra 5G (12GB RAM … and OnePlus 15. Comparing Samsung Galaxy S21 Ultra 5G (12GB RAM … vs OnePlus 15 on Smartprix enables you to check their respective specs scores and unique features. It would potentially help you understand how Samsung Galaxy S21 Ultra 5G (12GB RAM … stands against OnePlus 15 and which one should you buy The current lowest price found for Samsung Galaxy S21 Ultra 5G (12GB RAM … is ₹1,01,999 and for OnePlus 15 is ₹85,999. The details of both of these products were last updated on Sep 03, 2026.
| Specification | Samsung Galaxy S21 Ultra 5G (12GB RAM … | OnePlus 15 |
|---|---|---|
| Rear Camera | 108 MP ƒ/1.8 10 MP ƒ/4.9 (Telephoto) 10 MP ƒ/2.4 (Telephoto) 12 MP ƒ/2.2 (Ultra Wide) | 50 MP ƒ/1.8 (Wide Angle) Sensor: Sony's IMX906, Lens Quantity: 6P, Optical Image Stabilization: Yes, Aperture: ƒ/1.8, Field of View: 84°, Autofocus: Yes 50 MP ƒ/2.8 (Telephoto) Sensor: S5KJN5 with 3.5X optical zoom, 7x optical quality zoom, Lens Quantity: 4P, Optical Image Stabilization: Yes, Aperture: ƒ/2.8, Field of View: 30°, Autofocus: Yes, Ultra Res (digital) Zoom: up to 120x zoom 50 MP ƒ/2 (Ultra Wide) Sensor: OV50D, Lens Quantity: 6P, Aperture: ƒ/2.0, Field of view: 116°, Autofocus: Yes |
| CPU | 2.9 GHz, Octa Core Processor | 4.6 GHz, Octa Core Processor |
| RAM | 12 GB | 12 GB |
| Internal Memory | 128 GB | 256 GB |
| OS | Android v10 | Android v16 |
| Price | ₹1,01,999 | ₹85,999 |
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Overview
| Specs Score | 80 / 100 | 94 / 100 Better Specs |
| Display Resolution | 1440 x 3200 pixels Better Resolution | 1272 x 2772 pixels |
| Screen To Body Ratio | ~ 89.8% | ~ 95.5% Less Bezels |
| Storage | 128 GB | 256 GB More Storage |
| CPU Clock Speed | 2.9 GHz | 4.6 GHz Faster Clock Speed |
| Rear Camera | 108 MP Quad Better Camera Resolution | 50 MP + 50 MP + 50 MP Triple |
| Front Camera | 40 MP Better Front Camera Resolution | 32 MP |
| Weight | 227 g | 211 g Lighter |
| Thickness | 8.9 mm | 8.1 mm Slimmer |
| Battery | 5000 mAh | 7300 mAh Bigger Battery |
| Unique Features | No | IR Blaster |
General
| Country of Origin | India | |
| Model | Galaxy S21 Ultra 5G | CPH2745, CPH2747, PLK110 |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | Nano+Nano SIM |
| eSIM Support | Yes | |
| SAR | 1.17 W/kg (Head) 1 W/kg (Body) | |
| Device Type | Smartphone | Smartphone |
| Release Date | January 14, 2021 | October 27, 2025 |
| In The Box | OnePlus 15, Charger, USB data cable, SIM Ejector Tool, Protective Case, Quick Guide |
Design
| Dimensions | 75.6 x 165.1 x 8.9 mm | 76.7 x 161.4 x 8.1 mm |
| Weight | 227 g | 211 g |
| Colors | Infinite Black, Ultra Violet, Sand Storm |
Display
| Type | Color Dynamic AMOLED 2X (16M Colors) | Color LTPO AMOLED Screen (1B Colors) |
| Touch | Yes | Yes |
| Size | 6.8 inches, 1440 x 3200 pixels, 120 Hz | 6.78 inches, 1272 x 2772 pixels, 165 Hz |
| Aspect Ratio | 20:9 | 20/9 |
| PPI | ~ 515 PPI | ~ 450 PPI |
| Screen to Body Ratio | ~ 89.8% | ~ 95.5% |
| Glass Type | Corning Gorilla Glass Victus | Corning Gorilla Glass Victus 2 |
| Brightness | 800 nits (typ), 1800 nits (HBM) | |
| HDR Support | Yes, HDR10+ | Yes, Dolby Vision |
| Adaptive Refresh Rate | Yes | |
| Color Gamut | Support 100% DCI-P3 | |
| Features | Always-on Display, HDR10+ | Dolby Vision, Sun Display, Reduce White Point, Eye Comfort Reminders, Motion Cues, Minimum 1nit, Eye Comfort for Gaming |
| Notch | Yes, Punch Hole | Yes, Punch Hole |
Memory
| RAM | 12 GB | 12 GB |
| RAM Type | LPDDR5X Ultra | |
| Storage | 128 GB | 256 GB |
| Storage Type | UFS 3.1 | UFS 4.1 |
| Card Slot | No |
Connectivity
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | Yes |
| 5G Bands | 5G NR: n1/n2/n3/n5/n7/n8/n20/n26/n28/n38/n40/n41/n48/n66/n77/n78 | |
| VoLTE | Yes, Dual Stand-By | Yes, Dual Stand-By |
| Vo5G | Yes | |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Wifi Version | Wi-Fi 7 (802.11be), Wi-Fi 6 (802.11ax), Wi-Fi 5 (802.11ac), Wi-Fi Display, WLAN Tethering, Wi-Fi 2.4GHz 2×2+Wi-Fi 5GHz 2×2 concurrent, Wi-Fi 5GHz 160MHz, 2×2 MIMO | |
| Bluetooth | Yes, v5.2, A2DP, LE | Yes, v6.0, SBC, AAC, LDAC, aptX, aptX HD, aptX Adaptive, LHDC 5.0 |
| USB | Yes, USB-C v3.2 | Yes, USB-C v3.2 |
| USB Features | USB on-the-go, USB Charging | USB Tethering, USB on-the-go, USB Charging |
| IR Blaster | Yes |
Performance
| AnTuTu Score | 3,677,810 (Total) (v11) 1,129,775 (CPU) 1,319,203 (GPU) 428,136 (Memory) 800,696 (UX) |
Extra
| GPS | Yes, with A-GPS, GLONASS, BDS, GALILEO | Dual band: GPS(L1+L5), GLONASS(G1), BeiDou(B1I+B1C+B2a), Galileo(E1+E5a), QZSS(L1+L5), NavIC(L5) |
| Fingerprint Sensor | Yes, In Display | Yes, In Display |
| Face Unlock | Yes | Yes |
| Sensors | Accelerometer, Gyro, Proximity, Compass, Barometer | Proximity, Ambient Light, Color Temperature, E-compass, Accelerometer, Gyroscope, In-display Ultrasonic Fingerprint Sensor, Hall Sensor, Laser Focusing Sensor, Spectral Sensor, Infrared Remote Control |
| 3.5mm Headphone Jack | No | No |
| NFC | Yes | Yes |
| Cooling System | 360° Cryo Velocity Cooling System: Cool Under Pressure., Game-changing Military-grade Gyro, First to support Native 165fps on CODM | |
| Gaming Features | Always-on 120 FPS. Period., 120 FPS in games like MLBB | |
| AI Features | Plus Mind, Gemini AI | |
| Water Resistance | Yes, 1.5 m upto 30 min | Yes, 2 m upto 30 min |
| IP Rating | IP68 | IP66/IP68/IP69K/IP69 |
| Dust Resistant | Yes | Yes |
| Extra Features | OP Gaming Core, Touch Response Chip, G2 Wi-Fi Chip, Bypass Charging, 360° Cryo Velocity Cooling System |
Camera
| Rear Camera | 108 MP ƒ/1.8 10 MP ƒ/4.9 (Telephoto) 10 MP ƒ/2.4 (Telephoto) 12 MP ƒ/2.2 (Ultra Wide) | 50 MP ƒ/1.8 (Wide Angle) Sensor: Sony's IMX906, Lens Quantity: 6P, Optical Image Stabilization: Yes, Aperture: ƒ/1.8, Field of View: 84°, Autofocus: Yes 50 MP ƒ/2.8 (Telephoto) Sensor: S5KJN5 with 3.5X optical zoom, 7x optical quality zoom, Lens Quantity: 4P, Optical Image Stabilization: Yes, Aperture: ƒ/2.8, Field of View: 30°, Autofocus: Yes, Ultra Res (digital) Zoom: up to 120x zoom 50 MP ƒ/2 (Ultra Wide) Sensor: OV50D, Lens Quantity: 6P, Aperture: ƒ/2.0, Field of view: 116°, Autofocus: Yes |
| OIS | Yes | Yes |
| Auto Focus | Yes | Yes |
| Features | Auto-HDR, Panorama | Photo, Video, Portrait, Night, Panorama, SLO-MO, Long Exposure, Dual-view video, TIME-LAPSE, HI-RES, Underwater, Master, TEXT SCANNER, DOC SCANNER, TILT-SHIFT, PRO VIDEO |
| Video Recording | 8K @ 24 fps UHD, 4K @ 30/60 fps UHD, 1080p @ 240/30/60 fps FHD, 720p @ 960 fps HD | 8K @ 30 fps UHD, 4K @ 120/60 fps UHD, 1080p |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 40 MP ƒ/2.2 (Wide Angle) Punch Hole, Autofocus | 32 MP ƒ/2.4 (Wide Angle) Sensor: Sony IMX709, Lens Quantity: 5P, Focal Length: 21 mm equivalent, Autofocus: Supported, Aperture: f/2.4 Punch Hole, Screen Flash |
| Front Video Recording | 4K @ 30/60 fps UHD, 1080p @ 30 fps FHD | 4K @ 60 fps UHD, 1080p @ 60 fps FHD |
Technical
| OS | Android v10 | Android v16 |
| Custom UI | OxygenOS 16 | |
| Chipset | Samsung Exynos 2100 | Qualcomm Snapdragon 8 Elite Gen 5 |
| CPU | 2.9 GHz, Octa Core Processor | 4.6 GHz, Octa Core Processor |
| Core Details | 1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55 | 2x4.6 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M |
| GPU | Mali-G78 MP14 | Adreno 840 |
| NPU | Qualcomm Hexagon NPU | |
| Java | No | No |
| Browser | Yes | Yes |
Multimedia
| Supports | JPEG, PNG, BMP, GIF, WEB, HEIF, HEIC, DNG | |
| Yes | Yes | |
| Music | Yes | MP3, AAC, AAC+, WMA, AMR-NB, AMR-WB, WAV, FLAC, APE, OGG, MID, M4A, IMY, AC3, EAC3, EAC3-JOC, AC4 |
| Video | Yes | Dolby Vision, HDR10, HDR10+, +HLG, HDRViVid, MKV, MOV, MP4, H.265 (HEVC), AVI, WMV, TS, 3GP, ASF, FLV, WEB |
| FM Radio | No | No |
| Document Reader | Yes | Yes |
Battery
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 5000 mAh, Li-Po Battery | 7300 mAh, Si/C |
| Fast Charging | Yes, 25W Fast Charging | Yes, 120W SUPERVOOC Charging |
| Wireless Charging | Yes, 15W | Yes, 50W AIRVOOC |
| Reverse Charging | Yes, 4.5W | Yes, 10W |
| Reverse Wireless Charging | Yes, 5W | |
| Bypass Charging | Yes |
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