Samsung Galaxy S21 Ultra 5G (12GB RAM + 128GB) vs Samsung Galaxy Z Tri Fold
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Overview
| Specs Score | 80 / 100 | 93 / 100 Better Specs |
| Display Size | 6.8 in | 10 in Bigger Display |
| Display Resolution | 1440 x 3200 pixels Better Resolution | 1584 x 2160 pixels |
| RAM | 12 GB | 16 GB More RAM |
| Storage | 128 GB | 512 GB More Storage |
| CPU Clock Speed | 2.9 GHz | 4.32 GHz Faster Clock Speed |
| Rear Camera | 108 MP Quad | 200 MP + 12 MP + 10 MP Triple Better Camera Resolution |
| Front Camera | 40 MP Better Front Camera Resolution | 10 MP + 10 MP Dual |
| Weight | 227 g Lighter | 309 g |
| Thickness | 8.9 mm Slimmer | |
| Battery | 5000 mAh | 5600 mAh Bigger Battery |
| Unique Features | No | IR Blaster |
General
| Model | Galaxy S21 Ultra 5G | SM-D639B, SM-D639B/DS, SM-D639U, SM-D639U1, SM-D639N, SM-D6390 |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | (Nano-SIM + Nano-SIM), (eSIM + eSIM) (max 2 at a time) |
| Device Type | Smartphone | Smartphone |
| Release Date | January 14, 2021 | December 02, 2025 |
Design
| Dimensions | 75.6 x 165.1 x 8.9 mm | |
| Weight | 227 g | 309 g |
| Bezel less | No | |
| Colors | Crafted Black |
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 | 10 inches, 1584 x 2160 pixels, 120 Hz |
| Aspect Ratio | 20:9 | 4:3 |
| PPI | ~ 515 PPI | ~ 269 PPI |
| Screen to Body Ratio | ~ 89.8% | ~ 89.6% |
| Glass Type | Corning Gorilla Glass Victus | |
| Brightness | 1600 nits (peak) | |
| Features | Always-on Display, HDR10+ | Tri-foldable Dynamic LTPO AMOLED 2X, 120Hz, HDR |
| Notch | Yes, Punch Hole | Yes, Punch Hole |
| Foldable Display | Yes | |
| Dual Display | Yes, LTPO OLED, 6.5 inches, 1080 x 2520 pixels, Dynamic LTPO AMOLED 2X, 120Hz, HDR, 2600 nits (peak), Corning Gorilla Glass Ceramic 2 |
Memory
| RAM | 12 GB | 16 GB |
| Storage | 128 GB | 512 GB |
| Storage Type | UFS 3.1 |
Connectivity
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | Yes |
| VoLTE | Yes, Dual Stand-By | Yes, Dual Stand-By |
| Vo5G | Yes | |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Bluetooth | Yes, v5.2, A2DP, LE | Yes, v5.4, A2DP, LE |
| USB | Yes, USB-C v3.2 | Yes, USB-C |
| USB Features | USB on-the-go, USB Charging | USB on-the-go, USB Charging |
| IR Blaster | Yes |
Extra
| GPS | Yes, with A-GPS, GLONASS, BDS, GALILEO | Yes, with tri-band A-GPS, GLONASS, BDS, GALILEO, QZSS, NavIC |
| Fingerprint Sensor | Yes, In Display | Yes, Side |
| Face Unlock | Yes | Yes |
| Sensors | Accelerometer, Gyro, Proximity, Compass, Barometer | Accelerometer, Gyro, Proximity, Compass, Barometer |
| 3.5mm Headphone Jack | No | No |
| NFC | Yes | Yes |
| Water Resistance | Yes, 1.5 m upto 30 min | Yes, 1 m upto 30 min |
| IP Rating | IP68 | IP48 |
| Dust Resistant | Yes | Yes |
| Extra Features | Samsung Knox with Samsung Knox Vault, Dimensions Folded (HxWxD) 159.2 x 75.0 x 12.9 mm, Dimensions Unfolded (HxWxD) 159.2 x 214.1 x 3.9 mm (screen with the SIM tray) / 4.2 mm (center screen) / 4.0 mm (screen with the side button)** |
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), 1/3.94", 1.0µm, PDAF, OIS, 3x optical zoom 12 MP ƒ/2.2 (Ultra Wide) 13mm, 120˚ (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF |
| OIS | Yes | Yes |
| Auto Focus | Yes | Yes |
| Features | Auto-HDR, Panorama | HDR, Panorama |
| Video Recording | 8K @ 24 fps UHD, 4K @ 30/60 fps UHD, 1080p @ 240/30/60 fps FHD, 720p @ 960 fps HD | 4K @ 60 fps UHD, 8K @ 30 fps UHD, 1080p @ 60 fps FHD |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 40 MP ƒ/2.2 (Wide Angle) Punch Hole, Autofocus | 10 MP ƒ/2.2 (Ultra Wide) Cover Camera: 10 MP ƒ/2.2 (Wide Angle) Punch Hole |
| Front Video Recording | 4K @ 30/60 fps UHD, 1080p @ 30 fps FHD | 4K @ 30 fps UHD, 1080p @ 30 fps FHD |
Technical
| OS | Android v10 | Android v16 |
| Custom UI | One UI 8 | |
| Chipset | Samsung Exynos 2100 | Qualcomm Snapdragon 8 Elite |
| CPU | 2.9 GHz, Octa Core Processor | 4.32 GHz, Octa Core Processor |
| Core Details | 1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55 | 2x Prime Core@4.32 GHz & 6x Performance Core@3.53 GHz |
| GPU | Mali-G78 MP14 | Adreno 830 (1200 MHz) |
| Java | No | No |
| Browser | Yes | Yes |
Multimedia
| Yes | Yes | |
| Music | Yes | Yes |
| Video | Yes | Yes |
| FM Radio | No | No |
| Document Reader | Yes | Yes |
Battery
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 5000 mAh, Li-Po Battery | 5600 mAh |
| Fast Charging | Yes, 25W Fast Charging | Yes, 45W Fast Charging |
| Wireless Charging | Yes, 15W | Yes, 15W |
| Reverse Charging | Yes, 4.5W | Yes |
| Reverse Wireless Charging | Yes |
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