Samsung Galaxy A21 (SM-A215U) vs Xiaomi Redmi 7A (13MP 16GB)
Side by side comparison between Samsung Galaxy A21 vs Xiaomi Redmi 7A phones, differences, pros, cons and full specifications. What's the better?
,
6.5"
PLS
PLS
720x1600
16
MP
MP
13mp
3GB
RAM
RAM
Octa-core
4000
mAh
mAh
(Non removable)
vs
5.45"
IPS
IPS
720x1440
13
MP
MP
5mp
2GB
RAM
RAM
Octa-core
4000
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy A21 (SM-A215U)
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!
17 Advantages 
5 Advantages | 32 Common items in both devices |
| eMMC 5.1 |
| Plastic body, glass front |
| 60Hz |
| 16 million |
| LED flash |
| Only digital zoom |
| PDAF: phase detection autofocus |
| +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 A21 (SM-A215U) | Redmi 7A (13MP 16GB) | |
| Model | Galaxy A21 (SM-A215U) | Redmi 7A (13MP 16GB) |
| Other model names | Galaxy A21 SM-A215U (Sprint, T-Mobile, US Cellular, Verizon) | Xiaomi Redmi 7A M1903C3EC, M1903C3EE, M1903C3ET, Xiaomi Pine |
| Country or region available |  USA |  China |
| Brand | Samsung | Xiaomi |
| Release date | 6/26/2020 | 6/1/2019 |
| Depth | 8.1 millimeters (0.32 inches) | 9.55 millimeters (0.38 inches) |
| Size (width x height) | 76.7 x 167.8 millimeters (3.02 x 6.61 in) | 70.41 x 146.3 millimeters (2.77 x 5.76 in) |
| Weight | 193 grams (6.76 ounces) | 165 grams (5.78 ounces) |
| Build, materials | Plastic body, glass front | Plastic body, glass front |
| Protection against water and others | Not supported | Water repellent nano-coating (don't immerse) |
📲 Display | ||
| Galaxy A21 (SM-A215U) | Redmi 7A (13MP 16GB) | |
| Display type | TFT PLS | TFT IPS LCD |
| Screen size | 6.5" inches | 5.45" inches |
| Screen-to-body ratio | ~79.3% (screen-to-body ratio) | ~74.4% (screen-to-body ratio) |
| Display resolution | 720x1600 pixels (20:9) | 720x1440 pixels (18:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 270 PPI | 295 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Not supported |
| Refresh rate | 60Hz | 60Hz |
| Display features | Not supported | Not supported |
🤖 Operating System | ||
| Galaxy A21 (SM-A215U) | Redmi 7A (13MP 16GB) | |
| System version | Android 10 | Android 9.0 Pie |
| Firmware update | feature not registered | Android 10 |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Galaxy A21 (SM-A215U) | Redmi 7A (13MP 16GB) | |
| Chipset | 64bit: MediaTek Helio P35 (MT6765) (12nm) | 64bit: Qualcomm Snapdragon 439 SDM439 (12nm) |
| CPU | Octa-core, 2 processors: 4x 2.3GHz ARM Cortex-A53 (Quad-core) 4x 1.8GHz ARM Cortex-A53 (Quad-core) | Octa-core, 2 processors: 2x 2GHz ARM Cortex-A53 (Dual-core) 6x 1.45GHz ARM Cortex-A53 (Hexa-core) |
| GPU graphical controller | PowerVR GE8320 MP2 (680MHz) | Qualcomm Adreno 505 650Mhz |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Galaxy A21 (SM-A215U) | Redmi 7A (13MP 16GB) | |
| RAM memory | 3GB LPDDR3 | 2GB LPDDR3 |
| Internal storage | 32GB (20GB available) eMMC 5.1 | 16GB (9GB available) eMMC 5.1 |
| External storage | Until 512GB microSD, microSDXC (dedicated slot) | Until 256GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Galaxy A21 (SM-A215U) | Redmi 7A (13MP 16GB) | |
| Dual-SIM | Not supported | Dual-SIM Standby - Call active on one sim card (dedicated slot) |
| SIM card | 1 slot (Single-SIM) nano-SIM (4FF) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 150/50 Mbps | 150/50 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 | CDMA 800/1900, GSM 850/900/1800/1900 | CDMA 800, GSM 850/900/1800/1900 |
| Primary 3G network | CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100 | CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/2100 |
| Primary 4G network | LTE Cat4 (1, 2, 3, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41) VoLTE | LTE Cat4 (1, 3, 5, 8) TD-LTE (34, 38, 39, 40, 41) VoLTE |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE |
| Secondary 2G network | Not supported | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | UMTS 850/900/2100 |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | Not supported | GPRS, EDGE, UMTS, HSUPA, HSPA+ |
📷 Camera | ||
| Galaxy A21 (SM-A215U) | Redmi 7A (13MP 16GB) | |
| Back camera (main camera) | (quad camera) 16 megapixels 8MP ultrawide f/2.21/4.0"1.12µm 2MP macro f/2.4 2MP depth f/2.4 | 13 megapixels |
| Main camera resolution | 4608x3456 pixels | 4128x3096 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | Full HD (1920x1080) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/1.8 (aperture) | f/2.2 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | 1/3.06" inches | 1/3.1" inches |
| Pixel size | 1µm pixel | 1.12µm 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 | feature not registered |
📸 Front camera | ||
| Galaxy A21 (SM-A215U) | Redmi 7A (13MP 16GB) | |
| Front camera (secondary) | 13 megapixels | 5 megapixels |
| Front camera resolution | 4128x3096 pixels | 2560x1920 pixels |
| Video recording (secondary) | Full HD (1920x1080) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.0 (aperture) | f/2.2 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | 1/5" inches |
| Pixel size | 1.12µm pixel | 1.12µm pixel |
🔉 Sound and multimedia | ||
| Galaxy A21 (SM-A215U) | Redmi 7A (13MP 16GB) | |
| Loudspeaker | Supported | Supported |
| 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.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Galaxy A21 (SM-A215U) | Redmi 7A (13MP 16GB) | |
| USB | USB 2.0 Type-C reversible connector | MicroUSB 2.0, USB OTG On-The-Go |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 5.0 + A2DP/LE | 4.2 + A2DP |
| WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS, BeiDou |
| NFC | Not supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Galaxy A21 (SM-A215U) | Redmi 7A (13MP 16GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Compass Face unlock Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy A21 (SM-A215U) | Redmi 7A (13MP 16GB) | |
| Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 4000 mAh | 4000 mAh |
| Charger, watts | 15W Wired fast charging | 10W (5V/2A) Wired charging |
| Inductive / wireless charging | Not supported | Not supported |
| Talk time autonomy | feature not registered | feature not registered |
| Standby | feature not registered | 456 hours (19 days) |
➕ Other features | ||
| Galaxy A21 (SM-A215U) | Redmi 7A (13MP 16GB) | |
| 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: Black • One UI 2.0 | • Colors: Black, Blue, Gold • MIUI 12 • Sony IMX486 back camera sensor • WiFi Display |
☢️ Radiation rate | ||
| Galaxy A21 (SM-A215U) | Redmi 7A (13MP 16GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.6W/kg (head), 1.27W/kg (body) | 1W/kg (head), 1.12W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.56W/kg (head), 1.17W/kg (body) |