Both Samsung Galaxy M21 and Vivo Y31 5G comes with same RAM. In terms of display resolution, Samsung Galaxy M21 has better resolution of 2340 x 1080 than Vivo Y31 5G which has resolution of 1620 x 720. Vivo Y31 5G has more internal memory than Samsung Galaxy M21
| Name | Samsung Galaxy M21 | Vivo Y31 5G |
| RAM | 4 GB | 4 GB |
|---|---|---|
| Display | 6.4 in | 6.68 in |
| Internal Memory | 64 GB | 128 GB |
| Battery | 6000 mAh | 6500 mAh |
| Camera | 48 MP + 8 MP + 5 MP Triple | 50 MP + 0.08 MP Dual |
| Price | Rs. 15999 | Rs. 14999 |
The launch Date of the first phone is March 18, 2020. The cost of Samsung Galaxy M21 is Rs. 15999. The launch Date of the second phone is September 14, 2025. The cost of Vivo Y31 5G is Rs. 14999.
Vivo Y31 5G has larger screen size of 6.68 inches in comparison to Samsung Galaxy M21's 6.4 inch screen. Samsung Galaxy M21 has Super AMOLED Screen type where as Vivo Y31 5G has IPS Screen type. Samsung's phone has display density of 403 PPI & Vivo's phone has only 266 PPI display density. In terms of screen to body ratio, Vivo's phone has better screen to body ratio of ~ 90.7% than Samsung's phone ~ 84.2%. Samsung Galaxy M21 has 19.5:9 aspect ratio where as Vivo Y31 5G has 20:9 aspect ratio.
Both phones come with 4 GB RAM Vivo Y31 5G has more Internal Memory (128 GB) than Samsung Galaxy M21 (64 GB).
Vivo Y31 5G's 50 MP + 0.08 MP Dual Rear Camera outshines Samsung Galaxy M21's 48 MP + 8 MP + 5 MP Triple Rear Camera in terms of resolution. Samsung Galaxy M21 will be better choice if you're looking to click lot of selfies as it has better 20 MP Front Camera in comparison to Vivo Y31 5G's 8 MP Front Camera.
Both the phones has Android Operating System but the first one runs on version 10.0 and the second one on 15 version.
| Name | Samsung Galaxy M21 | Vivo Y31 5G |
| General | ||
| Country of Origin | India | |
| Model | Galaxy M21 | Y31 |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM (Hybrid Slot) |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | Nano+Nano SIM |
| Device Type | Smartphone | Smartphone |
| Release Date | March 18, 2020 | September 14, 2025 |
| In The Box | USB Cable, SIM Tray Ejector, Phone Case, Screen Protector (Applied), Power Adapter | |
| Design | ||
| Dimensions | 75.1 x 159 x 8.9 mm | |
| Weight | 188 g | |
| Display | ||
| Type | Color Super AMOLED Screen (16M Colors) | Color IPS Screen (16M Colors) |
| Touch | Yes | Yes |
| Size | 6.4 inches, 1080 x 2340 pixels | 6.68 inches, 720 x 1620 pixels, 120 Hz |
| Aspect Ratio | 19.5:9 | 20:9 |
| PPI | ~ 403 PPI | ~ 266 PPI |
| Screen to Body Ratio | ~ 84.2% | ~ 90.7% |
| Glass Type | Corning Gorilla Glass 3 | |
| Brightness | 1000nts | |
| Features | 420 nits (peak) | |
| Notch | Yes, Water Drop Notch | Yes, Water Drop Notch |
| Memory | ||
| RAM | 4 GB | 4 GB |
| Expandable RAM | Upto 4 GB Extra Virtual RAM | |
| Storage | 64 GB | 128 GB |
| Card Slot | Yes, upto 512 GB | |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | |
| VoLTE | Yes | Yes, Dual Stand-By |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Bluetooth | Yes, v5.0 | Yes, v5.4 |
| USB | Yes, USB-C v2.0 | Yes, USB-C v2.0 |
| USB Features | USB on-the-go, USB Charging | USB Tethering, USB on-the-go, USB Charging |
| Extra | ||
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS | with A-GPS, BeiDou, GLONASS, Galileo |
| Fingerprint Sensor | Yes, Rear | Yes, Side |
| Face Unlock | Yes | Yes |
| Sensors | Accelerometer, Gyro Sensor, Geomagnetic Sensor, Proximity Sensor, Virtual Light Sensing | Accelerometer, Ambient Light Sensor, Proximity Sensor, E-compass, Virtual Gyroscope |
| 3.5mm Headphone Jack | Yes | |
| AI Features | SMart AI, Ai Erase, Ai Photo Enhance, Circle to Search | |
| Camera | ||
| Rear Camera | 48 MP ƒ/2 (Wide Angle) 8 MP ƒ/2.2 (Ultra Wide) 5 MP ƒ/2.2 (Depth Sensor) | 50 MP (Main) 0.08 MP |
| Auto Focus | Yes | Yes |
| Features | Panorama, HDR | |
| Video Recording | 4K @ 30 fps UHD, 1080p @ 30 fps FHD | 1080p @ 30 fps FHD |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 20 MP ƒ/2 (Wide Angle) | 8 MP ƒ/2 |
| Front Video Recording | 1080p @ 30 fps FHD | |
| Technical | ||
| OS | Android v10.0, upgradable to v11 | Android v15 |
| Chipset | Samsung Exynos 9611 | MediaTek Dimensity 6300 |
| CPU | 2.3 GHz, Octa Core Processor | Octa Core Processor |
| Core Details | 4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53 | |
| GPU | Mali-G72 MP3 | |
| Java | No | No |
| Browser | Yes, supports HTML5 | Yes |
| Multimedia | ||
| Yes | Yes | |
| Music | MP3, M4A, 3GA, AAC, OGG, OGA, WAV, WMA, AMR, AWB, FLAC, MID, MIDI, XMF, MXMF, IMY, RTTTL, RTX, OTA | WAV, MP3, MP2, AMR-NB, MIDI, Vorbis, APE, FLAC, OGG, M4A |
| Video | MP4, M4V, 3GP, 3G2, WMV, ASF, AVI, FLV, MKV, WEBM | MP4, 3GP, AVI, TS, MKV, FLV |
| FM Radio | Yes | Yes |
| Speaker Type | Dual Stereo | |
| Document Reader | Yes | |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 6000 mAh, Li-Po Battery | 6500 mAh |
| Fast Charging | Yes, 15W Fast Charging | Yes, 44W |