Samsung Galaxy S21 Ultra vs Samsung Galaxy S25 Ultra (12GB RAM + 512GB)
Here you can compare Samsung Galaxy S21 Ultra and Samsung Galaxy S25 Ultra (12GB RAM + 5…. Comparing Samsung Galaxy S21 Ultra vs Samsung Galaxy S25 Ultra (12GB RAM + 5… on Smartprix enables you to check their respective specs scores and unique features. It would potentially help you understand how Samsung Galaxy S21 Ultra stands against Samsung Galaxy S25 Ultra (12GB RAM + 5… and which one should you buy The current lowest price found for Samsung Galaxy S21 Ultra is ₹47,990 and for Samsung Galaxy S25 Ultra (12GB RAM + 5… is ₹1,04,999. The details of both of these products were last updated on Oct 08, 2026.
| Specification | Samsung Galaxy S21 Ultra | Samsung Galaxy S25 Ultra (12GB RAM + 5… |
|---|---|---|
| CPU | 2.9 GHz, Octa Core Processor | 4.47 GHz, Octa Core Processor |
| Battery | 5000 mAh, Li-Po Battery | 5000 mAh, Li-ion Battery |
| OS | Android v10 | Android v15 |
| 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) | 200 MP ƒ/1.7 (Wide Angle) 24mm (wide), 1/1.3", 0.6µm, Multi-directional PDAF, OIS 10 MP ƒ/2.4 (Telephoto) 67mm (telephoto), 1/3.52", 1.12µm, PDAF, OIS, 3x Optical Zoom 50 MP ƒ/3.4 (Telephoto) 111mm (Periscope Telephoto), 1/2.52", 0.7µm, PDAF, OIS, 5x Optical Zoom 50 MP ƒ/1.9 (Ultra Wide) 120˚ (Ultrawide), 0.7µm, Dual Pixel PDAF, Super Steady Video |
| RAM | 12 GB | 12 GB |
| Price | ₹47,990 | ₹1,04,999 |
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Overview
| Specs Score | 77 / 100 | 93 / 100 Better Specs |
| Display Resolution | 1440 x 3200 pixels Better Resolution | 1440 x 3120 pixels |
| Storage | 256 GB | 512 GB More Storage |
| CPU Clock Speed | 2.9 GHz | 4.47 GHz Faster Clock Speed |
| Rear Camera | 108 MP Quad | 200 MP Quad Better Camera Resolution |
| Front Camera | 40 MP Better Front Camera Resolution | 12 MP |
| Thickness | 8.9 mm | 8.2 mm Slimmer |
General
| Model | Galaxy S21 Ultra 5G | SM-S938B, SM-S938B/DS, SM-S938U, SM-S938U1, SM-S938W, SM-S938N, SM-S9380, SM-S938E, SM-S938E/DS |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | eSIM+Nano SIM |
| eSIM Support | Yes | |
| SAR | 1.26 W/kg (Head) 0.64 W/kg (Body) | |
| Device Type | Smartphone | Smartphone |
| OS Updates | 7 years | |
| Security Updates | 7 years | |
| Release Date | January 14, 2021 | January 22, 2025 |
| In The Box | Handset, Stylus Pen, Data Cable (Type C to C), Sim Ejection Pin |
Design
| Dimensions | 75.6 x 165.1 x 8.9 mm | 77.6 x 162.8 x 8.2 mm |
| Weight | 227 g | 218 g |
| Bezel less | No | |
| Qwerty | No | |
| Colors | Titanium Silverblue, Titanium Black, Titanium Whitesilver, Titanium Gray |
Display
| Type | Color Dynamic AMOLED 2X (16M Colors) | Color Dynamic LTPO AMOLED 2X (16M Colors) |
| Touch | Yes | Yes |
| Size | 6.8 inches, 1440 x 3200 pixels, 120 Hz | 6.9 inches, 1440 x 3120 pixels, 120 Hz |
| Aspect Ratio | 20:9 | 19.5:9 |
| PPI | ~ 515 PPI | ~ 498 PPI |
| Screen to Body Ratio | ~ 89.8% | ~ 92.5% |
| Glass Type | Corning Gorilla Glass Victus | Corning Gorilla Armor 2 |
| Brightness | 2600 nits (Peak) | |
| HDR Support | Yes, HDR10+ | Yes, HDR10+ |
| Adaptive Refresh Rate | Yes, LTPO | |
| Features | Always-on Display, HDR10+, Curved Display | HDR10+, 2600 nits (Peak), Always-on Display |
| Notch | Yes, Punch Hole | Yes, Punch Hole |
| Curved Display | Yes | No |
Memory
| RAM | 12 GB | 12 GB |
| Storage | 256 GB | 512 GB |
| Storage Type | UFS 3.1 | UFS 4 |
| Card Slot | No |
Connectivity
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | Yes |
| 5G Bands | TDD Sub6: N38(2600), N40(2300), N41(2500), N77(3700), N78(3500), FDD Sub6: N1(2100), N2(1900), N3(1800), N5(850), N7(2600), N8(900), N12(700), N20(800), N25(1900), N26(850), N28(700), N66(AWS-3) | |
| 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, 802.11a/b/g/n/ac/ax/be 2.4GHz+5GHz+6GHz, EHT320, MIMO, 4096-QAM | |
| Ultra Wideband (UWB) Support | Yes | |
| Bluetooth | Yes, v5.2, A2DP, LE | Yes, v5.4, A2DP, LE |
| 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, USB Storage |
Performance
| AnTuTu Score | 2,557,926 (Total) (v10) 630,886 (CPU) 1,088,538 (GPU) 469,835 (Memory) 368,667 (UX) | |
| AnTuTu Storage Score | 192,970 | |
| Geekbench Score | 9,950 (Multi Core) (v6) 3,100 (Single Core) | |
| Camera Score | 151 (DxOMark) | |
| Speaker Score | 81 (Very Good) | |
| Battery Test Result | 15.1 hours |
Extra
| GPS | Yes, with A-GPS, GLONASS, BDS, GALILEO | Yes with A-GPS, Glonass, Beidou, Galileo, QZSS |
| Fingerprint Sensor | Yes, In Display | Yes, In Display |
| Face Unlock | Yes | Yes |
| Sensors | Accelerometer, Gyro, Proximity, Compass, Barometer | Accelerometer, Barometer, Gyro Sensor, Geomagnetic Sensor, Hall Sensor, Light Sensor, Proximity Sensor |
| 3.5mm Headphone Jack | No | No |
| NFC | Yes | Yes |
| AI Features | Photo Assist, Notes Assist, Drawing Assist, Circle to Search, Google Gemini (AI Mobile) | |
| Water Resistance | Yes, 1.5 m upto 30 min | Yes, 1.5 m upto 30 min |
| IP Rating | IP68 | IP68 |
| Dust Resistant | Yes | Yes |
| Extra Features | Photo Assist, Notes Assist, Drawing Assist, Circle to Search, Google Gemini (AI Mobile), 7 Years of Major OS Updates and 7 Years of Security Updates, Titanium Frame, Samsung Care+, Samsung Health, Samsung Wallet, S Pen Included, Glass Front (Corning Gorilla Armor 2), Glass Back (Corning Gorilla Armor 2), Titanium Frame (Grade 5), Stereo Speakers, DisplayPort 1.2, Samsung DeX, Samsung Wireless DeX, Ultra Wideband (UWB) Support |
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) | 200 MP ƒ/1.7 (Wide Angle) 24mm (wide), 1/1.3", 0.6µm, Multi-directional PDAF, OIS 10 MP ƒ/2.4 (Telephoto) 67mm (telephoto), 1/3.52", 1.12µm, PDAF, OIS, 3x Optical Zoom 50 MP ƒ/3.4 (Telephoto) 111mm (Periscope Telephoto), 1/2.52", 0.7µm, PDAF, OIS, 5x Optical Zoom 50 MP ƒ/1.9 (Ultra Wide) 120˚ (Ultrawide), 0.7µm, Dual Pixel PDAF, Super Steady Video |
| OIS | Yes | Yes |
| Auto Focus | Yes | Yes, Laser AF |
| Features | Auto-HDR, Panorama | Bixby Vision, Dual Recording, Food, Hyperlapse, Night, Panorama, Photo, Portrait, Portrait Video, Pro, Pro Video, Single Take, Slow Motion, Video, Upto 100X Digital Zoom |
| Video Recording | 8K @ 24 fps UHD, 4K @ 30/60 fps UHD, 1080p @ 240/30/60 fps FHD, 720p @ 960 fps HD | 8K @ 24/30 fps UHD, 4K @ 120/30/60 fps UHD, 1080p @ 240/30/60 fps FHD |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 40 MP ƒ/2.2 (Wide Angle) Punch Hole, Autofocus | 12 MP ƒ/2.2 (Wide Angle) 26mm (Wide), 1/3.2", 1.12µm, Dual Pixel PDAF Punch Hole, Autofocus, Screen Flash |
| Front Video Recording | 4K @ 30/60 fps UHD, 1080p @ 30 fps FHD | 4K @ 30/60 fps UHD, 1080p @ 30 fps FHD |
| Front Camera Features | Dual video call, Auto-HDR | HDR, HDR10+ |
Technical
| OS | Android v10 | Android v15 |
| Custom UI | One UI 7 | |
| Chipset | Samsung Exynos 2100 | Qualcomm Snapdragon 8 Elite for Galaxy |
| CPU | 2.9 GHz, Octa Core Processor | 4.47 GHz, Octa Core Processor |
| Core Details | 1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55 | 2x4.47 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M |
| GPU | Mali-G78 MP14 | Adreno 830 |
| Java | No | No |
| Browser | Yes | Yes |
Multimedia
| Yes | Yes | |
| Music | Yes | Yes |
| Video | Yes | Yes |
| FM Radio | No | No |
| Speaker Type | Dual Stereo | |
| Document Reader | Yes | Yes |
Battery
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 5000 mAh, Li-Po Battery | 5000 mAh, Li-ion Battery |
| Fast Charging | Yes, 25W Fast Charging | Yes, 45W Fast Charging PD3.0, 65% in 30 min |
| Wireless Charging | Yes, 15W | Yes, 15W |
| Reverse Charging | Yes, 4.5W | Yes, 10W |
| Reverse Wireless Charging | Yes, 4.5W | |
| Video Playback Time | 31 hours |
Discuss
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