Compare phones
| Global Score | |
| 76.1 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 7.0 Nougat | Android 11, 10 |
| 2017-06-20 | 2020-03-23 |
| 6.17 x 3.10 x 0.32 inches | 6.26 x 2.96 x 0.35 inches |
| 6.31 ounces | 6.63 ounces |
| 16 777 216 | Midnight blue and Raven black |
| Aluminum | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 5.7 inches | 6.4 inches |
| 1920 x 1080 pixels (Full HD) | 2340 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 386 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8 | 8.4 |
| Performance | |
| MediaTek Helio P20 MT6757 chipset | Exynos 9611 chipset |
| ARM Cortex-A53, 64-bit, 16 nm (Octa-Core 2300 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-T880 MP2 GPU | Mali-G72 MP3 GPU |
| 9.27 | 9.27 |
| Storage | |
| 32 GB internal memory | 64 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 8.88 | 11.74 |
| Camera | |
| 13.00 MP + 13.00 MP | 48.00 MP + 20.00 MP |
| f/1.70 aperture | f/2.00 aperture |
| -- | 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 |
| -- | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 9.02 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G) and HSPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.1 | 6.7 |
| Battery Life | |
| 3300mAh Li - Ion Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.28 | 7.52 |
| Other Features | |
| Bluetooth 4.2 | 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 Galaxy M21 has an overall score of 84.1, which is better than Samsung Galaxy J7 Max's 76.1 global score. Both of these phones use Android operating system, but Galaxy M21 has the older 11 version and Samsung Galaxy J7 Max has Android 7.0 Nougat version. The Galaxy M21 body is newer than Samsung Galaxy J7 Max's, although it is just a little thicker and a bit heavier.
The Galaxy M21's CPU is just as good as the CPU in Galaxy J7 Max, both of them have a Octa-Core CPU and a 4 GB RAM memory. Galaxy M21 has a bit better screen than Samsung Galaxy J7 Max, because it has a quite higher amount of pixels in each inch of screen, a little bit larger display and a little bit higher 1080 x 2340 resolution.
Galaxy M21 has a superior memory capacity to install applications and games than Samsung Galaxy J7 Max, because it has a SD extension slot that admits up to 512 GB and more internal memory capacity. Galaxy M21 features a superior battery performance than Galaxy J7 Max, because it has an 82% more battery size.
The Samsung Galaxy M21 features a much better camera than Samsung Galaxy J7 Max, because although it has a tinier aperture which is not recommended for capturing photographs and videos in poorly lited situations, it also counts with a way higher (4K) video definition and a back facing camera with way more mega pixels.
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