Samsung Galaxy A31 (SM-A315F) vs Xiaomi Mi A3 (128GB)
Side by side comparison between Samsung Galaxy A31 vs Xiaomi Mi A3 phones, differences, pros, cons and full specifications. What's the better?
,
6.4"
AMOLED
AMOLED
1080x2400
48
MP
MP
20mp
4GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
vs
6.088"
AMOLED
AMOLED
720x1560
48
MP
MP
32mp
4GB
RAM
RAM
Octa-core
4030
mAh
mAh
(Non removable)
What's the better phone? Xiaomi Mi A3 (128GB)
The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!
6 Advantages 
13 Advantages | 32 Common items in both devices |
| 4GB LPDDR4X |
| 128GB (104GB available) / 128GB (109GB available) |
| Until 1TB microSD, microSDXC / Until 512GB microSD, microSDXC |
| Super AMOLED |
| 60Hz |
| 16 million |
| LED flash |
| +25 specs and more in the table below |
Check the comparison table below for more items that are not evaluated in comparison score above.
Highlight differences Clear highlight📱 Model features | ||
| Galaxy A31 (SM-A315F) | Xiaomi Mi A3 (128GB) | |
| Model | Galaxy A31 (SM-A315F) | Xiaomi Mi A3 (128GB) |
| Other model names | Galaxy A31 SM-A315F (Single-Sim) NFC (128GB + 4GB RAM) | Xiaomi Mi A3 (Android One), M1906F9SH, M1906F9SI |
| Country or region available |  South Africa |  (Global, International) |
| Brand | Samsung | Xiaomi |
| Release date | 4/27/2020, Announced: 3/24/2020 | 7/24/2019, Announced: 7/17/2019 |
| Depth | 8.6 millimeters (0.34 inches) | 8.5 millimeters (0.33 inches) |
| Size (width x height) | 73.1 x 159.3 millimeters (2.88 x 6.27 in) | 71.85 x 153.48 millimeters (2.83 x 6.04 in) |
| Weight | 185 grams (6.48 ounces) | 174 grams (6.09 ounces) |
| Build, materials | Plastic body, glass front | Aluminum frame, glass front/back |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Galaxy A31 (SM-A315F) | Xiaomi Mi A3 (128GB) | |
| Display type | Super AMOLED | Super AMOLED |
| Screen size | 6.4" inches | 6.088" inches |
| Screen-to-body ratio | ~84.9% (screen-to-body ratio) | ~82.5% (screen-to-body ratio) |
| Display resolution | 1080x2400 pixels (20:9) | 720x1560 pixels (19.5:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 411 PPI | 282 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Gorilla Glass 5 |
| Refresh rate | 60Hz | 60Hz |
| Display features | Not supported | Not supported |
🤖 Operating System | ||
| Galaxy A31 (SM-A315F) | Xiaomi Mi A3 (128GB) | |
| System version | Android 10 | Android 9.0 Pie |
| Firmware update | Android 11 | Android 11 |
| User Interface | One UI 2.5 / 3.1 | Android One |
⚙️ Processor | ||
| Galaxy A31 (SM-A315F) | Xiaomi Mi A3 (128GB) | |
| Chipset | 64bit: MediaTek Helio P65 (MT6768) (12nm) | 64bit: Qualcomm Snapdragon 665 (SM6125) (11nm) |
| CPU | Octa-core, 2 processors: 2x 2GHz ARM Cortex-A75 (Dual-core) 6x 1.7GHz ARM Cortex-A55 (Hexa-core) | Octa-core, 2 processors: 4x 2GHz Kryo 260 Gold (Quad-core) 4x 1.8GHz Kryo 260 Silver (Quad-core) |
| GPU graphical controller | ARM Mali-G52 MC2 (820MHz) | Qualcomm Adreno 610 |
| Performance (benchmark) | AnTuTu: 151815 (v8) Geekbench: 5096 (v4.4), 1216 (v5.1) GFXBench: 7fps (ES 3.1 onscreen) | feature not registered |
💽 Memory and storage | ||
| Galaxy A31 (SM-A315F) | Xiaomi Mi A3 (128GB) | |
| RAM memory | 4GB LPDDR4X | 4GB LPDDR4X |
| Internal storage | 128GB (104GB available) eMMC 5.1 | 128GB (109GB available) UFS 2.1 |
| External storage | Until 1TB microSD, microSDXC (dedicated slot) | Until 512GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) |
📶 Mobile networks | ||
| Galaxy A31 (SM-A315F) | Xiaomi Mi A3 (128GB) | |
| Dual-SIM | Not supported | Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot) |
| SIM card | 1 slot (Single-SIM) nano-SIM (4FF) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 150/50 Mbps | 450/50 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G, 4G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Quad-Band 850/900/1800/1900 |
| Primary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/900/1900/2100 | UMTS 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat4 (1, 2, 3, 5, 7, 8, 20) TD-LTE (38, 40, 41) VoLTE | LTE Cat9 (1, 2, 3, 4, 5, 7, 8, 20, 28) TD-LTE (38, 40) VoLTE |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
| Secondary 2G network | Not supported | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | UMTS 850/900/1700/1900/2100 |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | Not supported | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ |
📷 Camera | ||
| Galaxy A31 (SM-A315F) | Xiaomi Mi A3 (128GB) | |
| Back camera (main camera) | (quad camera) 48 megapixels 8MP ultrawide f/2.2123°1/4"1.12µm 5MP macro f/2.4 5MP depth f/2.4 | (triple camera) 48 megapixels 8MP ultrawide f/2.21/4.0"1.12µm 2MP depth f/2.4 |
| Main camera resolution | 8000x6000 pixels | 8000x6000 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | 4K UHD (3840x2160) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/2.0 (aperture) | f/1.8 (aperture) |
| Focal length | 26mm lens | feature not registered |
| Sensor size | 1/2" inches | 1/2" inches |
| Pixel size | 0.8µm pixel | 0.8µm pixel |
| Autofocus | PDAF: phase detection autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital stabilization | EIS: Digital stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Not supported | Not supported |
| HDR | HDR photo on both cameras | HDR photo on both cameras |
| Camera extras | feature not registered | 1080p@120fps |
📸 Front camera | ||
| Galaxy A31 (SM-A315F) | Xiaomi Mi A3 (128GB) | |
| Front camera (secondary) | 20 megapixels | 32 megapixels |
| Front camera resolution | 5184x3840 pixels | 6528x4896 pixels |
| Video recording (secondary) | Full HD (1920x1080) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.2 (aperture) | f/2.0 (aperture) |
| Focal length | feature not registered | 26mm lens |
| Sensor size | feature not registered | 1/2.8" inches |
| Pixel size | feature not registered | 0.8µm pixel |
🔉 Sound and multimedia | ||
| Galaxy A31 (SM-A315F) | Xiaomi Mi A3 (128GB) | |
| Loudspeaker | Mono sound (not stereo) | Mono sound (not stereo) |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | FM | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | MP4, H.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Galaxy A31 (SM-A315F) | Xiaomi Mi A3 (128GB) | |
| USB | USB 2.0 Type-C, USB OTG On-The-Go | USB 2.0 Type-C, USB OTG On-The-Go |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | USB Type-C (reversible) | Not supported |
| Bluetooth | 5.0 + A2DP/LE | 5.0 + A2DP/LE |
| WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou | A-GPS, GeoTagging, GLONASS, BeiDou |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Supported |
🧭 Sensors | ||
| Galaxy A31 (SM-A315F) | Xiaomi Mi A3 (128GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (under display) Gyroscope Virtual proximity sensor | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (under display) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy A31 (SM-A315F) | Xiaomi Mi A3 (128GB) | |
| Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 5000 mAh | 4030 mAh |
| Charger, watts | 15W Wired fast charging | 18W (9V/2A) Wired fast charging Quick Charge 3 |
| Inductive / wireless charging | Not supported | Not supported |
| Talk time autonomy | feature not registered | feature not registered |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Galaxy A31 (SM-A315F) | Xiaomi Mi A3 (128GB) | |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice dialing, Voice recorder |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS (T9), MMS, E-mail, Push mail |
| Hands-free calling | Supported | Supported |
| Video calling | Supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Prism Black, Prism Blue, Prism Red, Prism White | • Colors: Gray, White, Blue |
☢️ Radiation rate | ||
| Galaxy A31 (SM-A315F) | Xiaomi Mi A3 (128GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | 0.488W/kg (head), 1.68W/kg (body) | feature not registered |