Samsung Galaxy S21 Ultra vs Samsung Galaxy S25 Ultra
Quick Comparison
Both Samsung Galaxy S21 Ultra and Samsung Galaxy S25 Ultra comes with same RAM. In terms of display resolution, Samsung Galaxy S25 Ultra has better resolution of 3440 x 1800 than Samsung Galaxy S21 Ultra which has resolution of 3200 x 1440. Both have the same amount of internal memory.
| Name | Samsung Galaxy S21 Ultra | Samsung Galaxy S25 Ultra |
| RAM | 12 GB | 12 GB |
|---|---|---|
| Display | 6.8 in | 6.86 in |
| Internal Memory | 256 GB | 256 GB |
| Battery | 5000 mAh | 5000 mAh |
| Camera | 108 MP Quad | 200 MP Quad |
| Price | Rs. 59999 | Rs. 124990 |
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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. 59999. The launch Date of the second phone is expected to be January 17, 2025 (Expected). The Expected cost of Samsung Galaxy S25 Ultra is Rs. 124990.
Display comparison
Samsung Galaxy S25 Ultra has larger screen size of 6.86 inches in comparison to Samsung Galaxy S21 Ultra's 6.8 inch screen. Both the phones have Screen Type. Samsung Galaxy S25 Ultra has display density of 566 PPI & Samsung Galaxy S21 Ultra has only 515 PPI display density. Samsung Galaxy S21 Ultra has 20:9 aspect ratio where as Samsung Galaxy S25 Ultra has 20.5:9 aspect ratio.
Memory comparison
Both mobiles come with 12 GB RAM and both have same Internal Memory of 256 GB.
Camera comparison
Samsung Galaxy S25 Ultra's 200 MP Quad Rear Camera outclasses Samsung Galaxy S21 Ultra's 108 MP Quad Rear Camera in terms of resolution. Samsung Galaxy S25 Ultra will be better choice if you're looking to click lot of selfies as it has better 50 MP Front Camera in comparison to Samsung Galaxy S21 Ultra's 40 MP Front Camera.
Technical comparison
Both the phones has Android Operating System but the first one runs on version 10 and the second one on 15 version.
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Full Comparison
| Name | Samsung Galaxy S21 Ultra | Samsung Galaxy S25 Ultra |
| General | ||
| Model | Galaxy S21 Ultra 5G | Galaxy S25 Ultra |
| 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 17, 2025 (Expected) |
| Design | ||
| Dimensions | 75.6 x 165.1 x 8.9 mm | 77.6 x 162.8 x 8.2 mm |
| Weight | 227 g | 219 g |
| Display | ||
| Type | Color Dynamic AMOLED 2X (16M Colors) | Color Dynamic AMOLED 2X (1B Colors) |
| Touch | Yes | Yes |
| Size | 6.8 inches, 1440 x 3200 pixels, 120 Hz | 6.86 inches, 1800 x 3440 pixels, 144 Hz |
| Aspect Ratio | 20:9 | 20.5:9 |
| PPI | ~ 515 PPI | ~ 566 PPI |
| Screen to Body Ratio | ~ 89.8% | |
| Glass Type | Corning Gorilla Glass Victus | Corning Gorilla Glass Victus Plus |
| Features | Always-on Display, HDR10+, Curved Display | Always-on Display, HDR10+, Curved Display |
| Notch | Yes, Punch Hole | Yes, Punch Hole |
| Memory | ||
| RAM | 12 GB | 12 GB |
| Storage | 256 GB | 256 GB |
| Storage Type | UFS 3.1 | UFS 4.0 |
| Card Slot | No | No |
| 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, v5.3 |
| 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 | Yes with A-GPS, Glonass |
| Fingerprint Sensor | Yes, In Display | Yes, In Display |
| Face Unlock | Yes | Yes |
| Sensors | Accelerometer, Gyro, Proximity, Compass, Barometer | Accelerometer, Proximity, Barometer |
| 3.5mm Headphone Jack | No | USB Type-C |
| NFC | Yes | |
| Water Resistance | Yes, 1.5 m upto 30 min | Yes |
| IP Rating | IP68 | |
| Dust Resistant | Yes | |
| Camera | ||
| Rear Camera | 108 MP f/1.8 10 MP f/4.9 (Telephoto) 10 MP f/2.4 (Telephoto) 12 MP f/2.2 (Ultra Wide) with autofocus | 200 MP f/1.8 50 MP f/2.2 (Ultra Wide) 50 MP f/2.4 (Telephoto) 10 MP with autofocus |
| Features | Auto-HDR, Panorama | Digital Zoom, Auto Flash, Face detection, Touch to focus |
| Video Recording | 8K @ 24 fps UHD, 4K @ 30/60 fps UHD, 1080p @ 240/30/60 fps FHD, 720p @ 960 fps HD | 4K, 1080p |
| Flash | Yes, LED | Yes, LED |
| Front Camera | Punch Hole 40 MP f/2.2 (Wide Angle) with Autofocus | Punch Hole 50 MP with Screen Flash |
| Front Video Recording | 4K @ 30/60 fps UHD, 1080p @ 30 fps FHD | 1080p |
| Technical | ||
| OS | Android v10 | Android v15 |
| Custom UI | OneUI 7.1 | |
| Chipset | Samsung Exynos 2100 | Qualcomm Snapdragon 8 Gen4 |
| CPU | 2.9 GHz, Octa Core Processor | Octa Core Processor |
| Core Details | 1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55 | |
| GPU | Mali-G78 MP14 | Adreno GPU |
| Java | No | No |
| Browser | Yes | Yes |
| 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 | 5000 mAh, Li-Po Battery |
| Fast Charging | Yes, 25W Fast Charging | Yes, 45W Fast Charging |
| Wireless Charging | Yes, 15W | Yes, 25W |
| Reverse Charging | Yes, 4.5W | Yes, 10W |