Compare phones
| Global Score | |
| 76.1 | 90.7 |
| Basic Information | |
| Samsung | Samsung |
| Android 10 | Android 14 |
| 2020-06-29 | -- |
| 6.61 x 3.02 x 0.32 inches | -- |
| 6.81 ounces | -- |
| Black | -- |
| Plastic and Plastic | Glass (Corning Gorilla Glass) and Titanium |
| -- | Scratch-Resistant Glass |
| $ 194.00 | -- |
| Display / Screen | |
| 6.5 inches | 6.8 inches |
| 1600 x 720 pixels | 3088 x 1440 pixels |
| IPS LCD | Dynamic AMOLED |
| 270 pixels per inch | 501 pixels per inch |
| -- | 2600 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.3 | 10.2 |
| Performance | |
| Mediatek Helio P35 chipset | Qualcomm Snapdragon 8 Gen 4 chipset |
| Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor | processor |
| 3 GB RAM | 12 GB RAM |
| PowerVR GE8320 GPU | Yes GPU |
| 9.27 | 6.21 |
| Storage | |
| 32 GB internal memory | 256 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 9.84 | 13.3 |
| Camera | |
| 16.00 MP + 13.00 MP | 200.00 MP + 12.00 MP |
| f/1.80 aperture | f/1.70 aperture |
| -- | 24.00mm focal length |
| 0.33 inches (1/3.06") sensor | 0.77 inches (1/1.3") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 7680 x 4320 (30 fps) video resolution |
| -- | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 9.35 | 14.74 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA |
| Nano SIM | Nano SIM |
| 6.7 | 10.6 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 5000mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.92 | 6.8 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.3 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
The Samsung Galaxy S25 Ultra is much better than Samsung Galaxy A21, with a 90.7 score against 76.1. The Samsung Galaxy S25 Ultra construction is noticeably lighter and extremely thinner than Samsung Galaxy A21. These devices work with Android OS, but Samsung Galaxy S25 Ultra has a newer 14 version while Samsung Galaxy A21 has Android 10 version.
The Samsung Galaxy S25 Ultra has a way better screen than Galaxy A21, because it has a bit bigger display, a lot greater pixel density and a way higher 1440 x 3088 resolution. Samsung Galaxy A21 has a very superior performance than Galaxy S25 Ultra, although it has lesser RAM memory, they both have 8 cpu cores.
Samsung Galaxy S25 Ultra counts with much more storage capacity to install applications and games or saving photos and videos than Samsung Galaxy A21, because although it has no slot for an external memory card, it also counts with 256 GB internal storage capacity. Galaxy S25 Ultra counts with better battery performance than Samsung Galaxy A21, because it has a 5000mAh battery capacity.
Samsung Galaxy S25 Ultra has a much better camera than Galaxy A21, because it has a much bigger camera sensor capturing way higher quality photos and videos, a bigger aperture, a way higher video quality and a camera in the back with lot more MP.
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