Compare phones
| Global Score | |
| 72.6 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 15 | Android 11, 10 |
| -- | 2020-03-23 |
| -- | 6.26 x 2.96 x 0.35 inches |
| -- | 6.63 ounces |
| -- | Midnight blue and Raven black |
| -- | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6.8 inches | 6.4 inches |
| -- | 2340 x 1080 pixels |
| AMOLED | Super AMOLED |
| -- | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 2.7 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 8 Elite SM8650 (4 nm) chipset | Exynos 9611 chipset |
| processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 12 GB RAM | 4 GB RAM |
| Adreno 830 GPU | Mali-G72 MP3 GPU |
| 6.21 | 9.27 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 11.74 |
| Camera | |
| 200.00 MP + 10.00 MP | 48.00 MP + 20.00 MP |
| -- | f/2.00 aperture |
| -- | 26.00mm focal length |
| 0.64 inches (1/1.56") sensor | 0.5 inches (1/2") sensor |
| 7680 x 4320 (30 fps) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 13.42 | 11.55 |
| Networks | |
| -- | Wi-Fi |
| -- | 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 | Nano SIM, Dual SIM |
| 7.6 | 6.7 |
| Battery Life | |
| 3050mAh Dual Nano SIM + eSIM Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 5.04 | 7.52 |
| Other Features | |
| Bluetooth 5.3 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
Samsung Galaxy M21 has an overall score of 84.1, which is better than Galaxy S25 Slim (Rumored)'s 72.6 overall score. Both phones we compare here include Android operating system, but Samsung Galaxy M21 has older 11 version while Galaxy S25 Slim (Rumored) has Android 15 version. Galaxy M21 has a much better performance than Galaxy S25 Slim (Rumored), because although it has 8 GB lesser RAM memory, it also counts with a larger number of cores.
Galaxy M21 counts with a much better looking screen than Samsung Galaxy S25 Slim (Rumored), although it has a little bit smaller screen. Samsung Galaxy S25 Slim (Rumored) features a much better camera than Samsung Galaxy M21, because it has a lot bigger sensor taking more light and vivid colors, a way better 7680x4320 video quality and a camera in the back with lot more mega-pixels.
The Samsung Galaxy M21 counts with a greater storage to install applications and games than Galaxy S25 Slim (Rumored), because although it has only 64 GB internal memory, it also counts with a SD memory slot that holds up to 512 GB. Galaxy M21 counts with a way better battery lifetime than Galaxy S25 Slim (Rumored), because it has a 6000mAh battery size.
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