Compare phones
| Global Score | |
| 72 | 84.1 |
| Basic Information | |
| Samsung | |
| Android 11 | Android 11, 10 |
| 2021-04-28 | 2020-03-23 |
| 6.40 x 2.94 x 0.33 inches | 6.26 x 2.96 x 0.35 inches |
| 6.53 ounces | 6.63 ounces |
| Supersonic Black and Supersonic blue | Midnight blue and Raven black |
| -- | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6.5 inches | 6.4 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 405 pixels per inch | 403 pixels per inch |
| 600 cd/m2 brightness | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.6 | 8.4 |
| Performance | |
| MediaTek Dimensity 700 MT6833V chipset | Exynos 9611 chipset |
| Cortex-A76, 64-bit, 7 nm (Octa-Core 2200 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Mali-G57 GPU | Mali-G72 MP3 GPU |
| 9.18 | 9.27 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| microSDXC (up to 1 TB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 15.42 | 11.74 |
| Camera | |
| 48.00 MP + 16.00 MP | 48.00 MP + 20.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| 26.00mm focal length | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (120 fps) (HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 10.56 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 10.6 | 6.7 |
| Battery Life | |
| 5000mAh Li - Polymer Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 7.52 |
| Other Features | |
| Bluetooth 5.1 | Bluetooth 5.0 |
| GPS | GPS |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Samsung Galaxy M21 has an overall score of 84.1, which is better than the realme 8 5G's 72 global score. Even being the best cellphone in this review, it must be told that it's also an older, just a bit heavier and just a little thicker cellphone. These phones have the same Android 11 OS, so you shouldn't notice any differences regarding OS features.
The realme 8 5G has a slightly better looking screen than Galaxy M21, because it has a little bit bigger screen, a slightly better resolution of 1080 x 2400 pixels, a just a little better display density and a brighter display. The Samsung Galaxy M21 features a bit superior CPU than realme 8 5G. They have a Octa-Core processor and 4 GB of RAM memory.
The Galaxy M21 counts with a bit better camera than realme 8 5G, because although it has a tinier aperture which is not good for shooting photographs and videos in poorly lited environments, and they both have the same resolution back-facing camera, the Galaxy M21 also counts with a lot higher video quality.
Realme 8 5G has a much bigger storage to store more apps and games than Samsung Galaxy M21, because it has a slot for SD memory cards that holds up to 1 TB and more internal memory capacity. The Galaxy M21 counts with improved battery life than realme 8 5G, because it has 6000mAh of battery capacity.
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