| Global Score | |
| 75.4 | 91.8 |
| Basic Information | |
| Samsung | Samsung |
| Android 4.4.4 | Android 11 |
| 2015-01-11 | 2021-01-29 |
| 5.94 x 3.00 x 0.25 inches | 5.97 x 2.80 x 0.31 inches |
| 4.97 ounces | 6.03 ounces |
| Blue, Gold and White | Gray, Phantom pink, Violet and White |
| Metal | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 360.00 | $ 722.00 |
| Display / Screen | |
| 5.5 inches | 6.2 inches |
| 1080 x 1920 pixels (Full HD) | 2400 x 1080 pixels |
| Super AMOLED | Dynamic AMOLED |
| 401 pixels per inch | 424 pixels per inch |
| -- | 1300 cd/m2 brightness |
| Capacitive, Multi-touch | No touch screen |
| 9 | 9.2 |
| Performance | |
| Qualcomm Snapdragon 615 8939 chipset | Qualcomm Snapdragon 888 chipset |
| 64-bit ARM Cortex-A53 (Quad-Core 1500 MHz + Quad-Core 1000 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 2 GB (800 MHz) RAM | 8 GB RAM |
| Adreno 405 (500 MHz) GPU | Adreno 660 GPU |
| 9.45 | 9.63 |
| Storage | |
| 16 GB internal memory | 128 GB internal memory |
| microSD, microSDHC, microSDXC (up to 64 GB) external memory slot | No SD card slot |
| 6.16 | 10.1 |
| Camera | |
| 13.00 MP + 5.00 MP | 12.00 MP + 10.00 MP |
| -- | f/1.80 aperture |
| -- | 26.00mm focal length |
| -- | 0.57 inches (1/1.76") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 7680 x 4320 (24 fps) video resolution |
| -- | 1280 x 720 (960 fps) (HD) slow motion video |
| 8.03 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA+ (4G), HSDPA, HSUPA, EDGE, GPRS and GSM | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 7 | 10.7 |
| Battery Life | |
| 2600mAh Li-Ion Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 17 hours talk time | -- |
| 4.56 | 5.92 |
| Other Features | |
| Bluetooth 4.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| -- | Fingerprint ID Scanner |
| Accelerometer, Compass, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Galaxy S21 is much better than Galaxy A7, getting a score of 91.8 against 75.4. The Galaxy S21 body is noticeably newer than Galaxy A7's, but it's somewhat thicker and somewhat heavier. Both of these phones include Android OS (operating system), but Galaxy S21 has the older 11 version while Galaxy A7 has Android 4.4.4.
The Samsung Galaxy S21 has a bit better processing power than Samsung Galaxy A7, because although it has doesn't have an additional GPU and a 32-bits CPU against 64-bits, and they both have a Octa-Core CPU, the Samsung Galaxy S21 also counts with more RAM. The Galaxy S21 counts with just a bit better display than Samsung Galaxy A7, because it has a bit better pixel number per inch of display, a quite bigger display and a slightly higher 1080 x 2400 pixels resolution.
Galaxy S21 takes much clearer photographs and videos than Samsung Galaxy A7, because although it has a worse 12 mega-pixels resolution back facing camera, it also counts with a much higher video definition. The Galaxy S21 has a very superior storage to store more apps and games than Galaxy A7, because although it has no external SD slot, it also counts with 128 GB internal memory capacity.
Galaxy S21 counts with a superior battery lifetime than Samsung Galaxy A7, because it has a 54% larger battery capacity.
The Galaxy S21 costs a lot more money than Galaxy A7, but you can get a much better phone for that few extra dollars.
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