Samsung Galaxy S21 Ultra vs Samsung Galaxy S26 Plus (12GB RAM + 512GB)
Here you can compare Samsung Galaxy S21 Ultra and Samsung Galaxy S26 Plus (12GB RAM + 51…. Comparing Samsung Galaxy S21 Ultra vs Samsung Galaxy S26 Plus (12GB RAM + 51… 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 S26 Plus (12GB RAM + 51… and which one should you buy The current lowest price found for Samsung Galaxy S21 Ultra is $399 and for Samsung Galaxy S26 Plus (12GB RAM + 51… is $1,299.99. The details of both of these products were last updated on Mar 21, 2026.
| Specification | Samsung Galaxy S21 Ultra | Samsung Galaxy S26 Plus (12GB RAM + 51… |
|---|---|---|
| Battery | 5000 mAh, Li-Po Battery | 4900 mAh, Li-ion Battery |
| OS | Android v10 | Android v16 |
| RAM | 12 GB | 12 GB |
| Display | 6.8 inches, 1440 x 3200 pixels, 120 Hz | 6.7 inches, 1440 x 3120 pixels, 120 Hz |
| Internal Memory | 256 GB | 512 GB |
| Price | $399 | $1,299.99 |
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Overview
| Specs Score | 94 / 100 Better Specs | 93 / 100 |
| 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 | 4.74 GHz Faster Clock Speed |
| CPU Cores | Octa Core | Deca Core More CPU Cores |
| Rear Camera | 108 MP Quad Better Camera Resolution | 50 MP + 12 MP + 10 MP Triple |
| Front Camera | 40 MP Better Front Camera Resolution | 12 MP |
| Weight | 227 g | 190 g Lighter |
| Thickness | 8.9 mm | 7.3 mm Slimmer |
General
| Model | Galaxy S21 Ultra 5G | SM-S947B, SM-S947B/DS, SM-S947U, SM-S947U1, SM-S947W, SM-S947N, SM-S9470, SM-S947E, SM-S947E/DS |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | SIM 1 + SIM 2 / SIM 1 + eSIM / Dual eSIM SIM |
| Device Type | Smartphone | Smartphone |
| Release Date | January 14, 2021 | February 25, 2026 |
Design
| Dimensions | 75.6 x 165.1 x 8.9 mm | 75.8 x 158.4 x 7.3 mm |
| Weight | 227 g | 190 g |
| Bezel less | Yes | |
| Colors | Cobalt Violet, Sky Blue, Black, White, Silver Shadow, Pink Gold |
Display
| Type | Color Dynamic AMOLED 2X (16M Colors) | Color Dynamic AMOLED 2X Screen (16M Colors) |
| Touch | Yes | Yes |
| Size | 6.8 inches, 1440 x 3200 pixels, 120 Hz | 6.7 inches, 1440 x 3120 pixels, 120 Hz |
| Aspect Ratio | 20:9 | 20.5:9 |
| PPI | ~ 515 PPI | ~ 516 PPI |
| Screen to Body Ratio | ~ 89.8% | ~ 90.7% |
| Glass Type | Corning Gorilla Glass Victus | Corning Gorilla Armor 2 |
| Brightness | 2600nits | |
| Features | Always-on Display, HDR10+, Curved Display | Privacy Display |
| Notch | Yes, Punch Hole | Yes, Punch Hole |
Memory
| RAM | 12 GB | 12 GB |
| Storage | 256 GB | 512 GB |
| Storage Type | UFS 3.1 | UFS 4 |
Connectivity
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | Yes |
| 5G Bands | 5G 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), 5G TDD Sub6: N38(2600), N40(2300), N41(2500), N77(3700), N78(3500) | |
| VoLTE | Yes, Dual Stand-By | Yes, Dual Stand-By |
| Vo5G | Yes | |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Wifi Version | 802.11a/b/g/n/ac/ax/be 2.4GHz+5GHz+6GHz, EHT320, MIMO, 4096-QAM | |
| Bluetooth | Yes, v5.2, A2DP, LE | Yes, v6.0, 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 |
Extra
| GPS | Yes, with A-GPS, GLONASS, BDS, GALILEO | 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, Fingerprint Sensor, Gyro Sensor, Geomagnetic Sensor, Hall Sensor, Light Sensor, Proximity Sensor |
| 3.5mm Headphone Jack | No | No |
| NFC | Yes | Yes |
| AI Features | Galaxy AI | |
| 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 | Samsung Care+, Samsung Health, Samsung Wallet |
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) 24mm (wide), 1/1.56", 1.0µm, dual pixel PDAF, OIS 10 MP ƒ/2.4 (Telephoto) 67mm (telephoto), 1/3.94", 1.0µm, PDAF, OIS, 3x optical zoom 12 MP ƒ/2.2 (Ultra Wide) 3mm, 120˚ (ultrawide), 1/2.55" 1.4µm, Super Steady video |
| OIS | Yes | Yes |
| Auto Focus | Yes | Yes |
| Features | Auto-HDR, Panorama | Optical Zoom 3x, Optical Quality Zoom 2x, Digital Zoom up to 30x |
| 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, 1080p |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 40 MP ƒ/2.2 (Wide Angle) Punch Hole, Autofocus | 12 MP ƒ/2.2 (Wide Angle) Punch Hole |
| 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 | One UI 8.5 | |
| Chipset | Samsung Exynos 2100 | Qualcomm Snapdragon 8 Elite Gen 5 for Galaxy |
| CPU | 2.9 GHz, Octa Core Processor | 4.74 GHz, Deca Core Processor |
| Core Details | 1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55 | 2x4.74 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M |
| GPU | Mali-G78 MP14 | Adreno 840 |
| Java | No | No |
| Browser | Yes | Yes |
Multimedia
| Yes | Yes | |
| Music | Yes | MP3, M4A, 3GA, AAC, OGG, OGA, WAV, AMR, AWB, FLAC, MID, MIDI, XMF, MXMF, IMY, RTTTL, RTX, OTA, DFF, DSF, APE |
| Video | Yes | MP4, M4V, 3GP, 3G2, AVI, FLV, MKV, WEBM |
| FM Radio | No | No |
| Document Reader | Yes | Yes |
Battery
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 5000 mAh, Li-Po Battery | 4900 mAh, Li-ion Battery |
| Fast Charging | Yes, 25W Fast Charging | Yes, 45W |
| Wireless Charging | Yes, 15W | Yes, 25W |
| Reverse Charging | Yes, 4.5W | Yes |
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