Samsung Galaxy S21 Ultra vs Samsung Galaxy A51
Quick Comparison
Samsung Galaxy S21 Ultra has better RAM than Samsung Galaxy A51. In terms of display resolution, Samsung Galaxy S21 Ultra has better resolution of 3200 x 1440 than Samsung Galaxy A51 which has resolution of 2340 x 1080. Samsung Galaxy S21 Ultra has more internal memory than Samsung Galaxy A51
| Name | Samsung Galaxy S21 Ultra | Samsung Galaxy A51 |
| RAM | 12 GB | 6 GB |
|---|---|---|
| Display | 6.8 in | 6.5 in |
| Internal Memory | 256 GB | 128 GB |
| Battery | 5000 mAh | 4000 mAh |
| Camera | 108 MP Quad | 48 MP Quad |
| Price | Rs. 48990 | Rs. 24999 |
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Detailed Comparison
Price And Launch
The launch Date of the first phone is January 14, 2021. The cost of Samsung Galaxy S21 Ultra is Rs. 48990. The launch Date of the second phone is January 29, 2020 . The cost of Samsung Galaxy A51 is Rs. 24999.
Display comparison
Samsung Galaxy A51 has screen size of 6.5 inches which falls short to Samsung Galaxy S21 Ultra's 6.8 inch screen. Samsung Galaxy S21 Ultra has Screen type where as Samsung Galaxy A51 has Super AMOLED Screen type. Samsung Galaxy S21 Ultra has display density of 515 PPI & Samsung Galaxy A51 has only 405 PPI display density. In terms of screen to body ratio, Samsung Galaxy S21 Ultra has better screen to body ratio of ~ 89.8% than Samsung Galaxy A51's ~ 87.4%. Samsung Galaxy S21 Ultra has 20:9 aspect ratio where as Samsung Galaxy A51 has 20:9 aspect ratio.
Memory comparison
Samsung Galaxy S21 Ultra's larger 12 GB RAM is better for playing games and all with respect to Samsung Galaxy A51's lower 6 GB RAM. Samsung Galaxy S21 Ultra has more Internal Memory (256 GB) than Samsung Galaxy A51 (128 GB).
Camera comparison
Samsung Galaxy S21 Ultra's 108 MP Quad Rear Camera outclasses Samsung Galaxy A51's 48 MP Quad Rear Camera in terms of resolution. Samsung Galaxy S21 Ultra will be better choice if you're looking to click lot of selfies as it has better 40 MP Front Camera in comparison to Samsung Galaxy A51's 32 MP Front Camera.
Technical comparison
Both the phones run on Android Operating System Version 10.
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Full Comparison
| Name | Samsung Galaxy S21 Ultra | Samsung Galaxy A51 |
| General | ||
| Model | Galaxy S21 Ultra 5G | Galaxy A51 |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | Nano+Nano SIM |
| Device Type | Smartphone | Smartphone |
| Release Date | January 14, 2021 | January 29, 2020 |
| Design | ||
| Dimensions | 75.6 x 165.1 x 8.9 mm | 73.6 x 158.5 x 7.9 mm |
| Weight | 227 g | 172 g |
| Display | ||
| Type | Color Dynamic AMOLED 2X (16M Colors) | Color Super AMOLED Screen (16M Colors) |
| Touch | Yes | Yes |
| Size | 6.8 inches, 1440 x 3200 pixels, 120 Hz | 6.5 inches, 1080 x 2340 pixels |
| Aspect Ratio | 20:9 | 20:9 |
| PPI | ~ 515 PPI | ~ 405 PPI |
| Screen to Body Ratio | ~ 89.8% | ~ 87.4% |
| Glass Type | Corning Gorilla Glass Victus | |
| Features | Always-on Display, HDR10+, Curved Display | |
| Notch | Yes, Punch Hole | Yes, Punch Hole |
| Curved Display | Yes | |
| Memory | ||
| RAM | 12 GB | 6 GB |
| Storage | 256 GB | 128 GB |
| Storage Type | UFS 3.1 | |
| Card Slot | Yes, upto 512 GB | |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | |
| VoLTE | Yes, Dual Stand-By | Yes, Dual Stand-By |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Bluetooth | Yes, v5.2, A2DP, LE | Yes, v5.0 |
| USB | Yes, USB-C v3.2 | Yes, USB-C v2.0 |
| USB Features | USB on-the-go, USB Charging | USB on-the-go, USB Charging |
| Extra | ||
| GPS | Yes, with A-GPS, GLONASS, BDS, GALILEO | Yes, with A-GPS, GLONASS, GALILEO, BDS |
| Fingerprint Sensor | Yes, In Display | Yes, In Display |
| Face Unlock | Yes | Yes |
| Sensors | Accelerometer, Gyro, Proximity, Compass, Barometer | Accelerometer, Gyro, Proximity, Compass |
| 3.5mm Headphone Jack | No | Yes |
| NFC | Yes | |
| Water Resistance | Yes, 1.5 m upto 30 min | |
| IP Rating | IP68 | |
| Dust Resistant | Yes | |
| 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) | 48 MP ƒ/2 (Wide Angle) 12 MP ƒ/2.2 (Ultra Wide) 5 MP ƒ/2.4 (Macro) Macro 5 MP ƒ/2.2 (Depth Sensor) |
| OIS | Yes | |
| Auto Focus | Yes | Yes |
| Features | Auto-HDR, Panorama | Panorama, HDR |
| Video Recording | 8K @ 24 fps UHD, 4K @ 30/60 fps UHD, 1080p @ 240/30/60 fps FHD, 720p @ 960 fps HD | 1080p @ 30 fps FHD |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 40 MP ƒ/2.2 (Wide Angle) Punch Hole, Autofocus | 32 MP ƒ/2.2 (Wide Angle) |
| Front Video Recording | 4K @ 30/60 fps UHD, 1080p @ 30 fps FHD | 1080p @ 30 fps FHD |
| Technical | ||
| OS | Android v10 | Android v10, upgradable to v12 |
| Chipset | Samsung Exynos 2100 | Samsung Exynos 9611 |
| CPU | 2.9 GHz, Octa Core Processor | 2.3 GHz, Octa Core Processor |
| Core Details | 1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55 | 4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53 |
| GPU | Mali-G78 MP14 | Mali-G72 MP3 |
| Java | No | No |
| Browser | Yes | Yes, supports HTML5 |
| Multimedia | ||
| Yes | Yes | |
| Music | Yes | Yes |
| Video | Yes | Yes |
| FM Radio | No | Yes |
| Document Reader | Yes | Yes |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 5000 mAh, Li-Po Battery | 4000 mAh, Li-Po Battery |
| Fast Charging | Yes, 25W Fast Charging | Yes, 15W Fast Charging |
| Wireless Charging | Yes, 15W | |
| Reverse Charging | Yes, 4.5W | |