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Samsung Galaxy A21 (SM-A215U) vs Xiaomi Redmi Go (16GB)

Side by side comparison between Samsung Galaxy A21 vs Xiaomi Redmi Go phones, differences, pros, cons with full specifications. What's the better?

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Compare Xiaomi Redmi Go XSamsung Galaxy A21 (SM-A215U)21Points
Samsung Galaxy A21 (SM-A215U)
6.5"
PLS

720x1600

16
MP

13mp

3GB
RAM

64bit Octa

4000
mAh

(Non removable)

vs
Xiaomi Redmi Go (16GB)
5"
IPS

720x1280

8
MP

5mp

1GB
RAM

64bit Quad

3000
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!

Galaxy A21 (SM-A215U)21 Advantages Samsung Galaxy A21 (SM-A215U)vsRedmi Go (16GB)4 Advantages Xiaomi Redmi Go (16GB)
+2.3Ghz 64bit Octa-Core89%
More powerful processor, you can open your applications faster
vs1.4Ghz 64bit Quad-Core
+3GB LPDDR32 times
More RAM memory. Typically more responsive and better for multitasking.
vs1GB LPDDR3
+32GB (20GB available)67%
More internal storage for applications and files
vs16GB (12GB available)
+Until 512GB microSD, microSDXC3 times
More external storage for files using memory cards
vsUntil 128GB microSD, microSDXC
+8.1 millimeters (0.32 inches)3%
Thinner
vs8.35 millimeters (0.33 inches)
+720x1600 pixels25%
Higher resolution screen
vs720x1280 pixels
+6.5"30%
Larger screen
vs5"
+(quad camera) 16MP + 8MP + 2MP + 2MP2 times
Higher resolution main camera
vs(back) 8MP
+f/1.8 (aperture)11%
Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
vsf/2.0 (aperture)
+(front) 13MP160%
Higher resolution secondary camera to take pictures and selfies
vs(front) 5MP
+(front) Full HD (1920x1080)125%
More image quality for recording videos with the secondary camera
vs(front) HD (1280x720)
+Android 10Advantage
Android 10 is newer and safer
vsAndroid 8.1 Oreo
+CompassAdvantage
Sensors help you use the device
vsNot supported
+GyroscopeAdvantage
Sensors help you use the device
vsNot supported
+Fingerprint sensor (rear-mounted)Advantage
Sensors help you use the device
vsNot supported
+Face unlockAdvantage
Sensors help you use the device
vsNot supported
+4000 mAh33%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
vs3000 mAh
+15W2 times
More power (watts) to charge the battery faster. Sometimes, the charger that comes with the device doesn't have the same power supported by the device. Check before you buy it.
vs5W
+802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMOAdvantage
WiFi 802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO is newer and faster
vs802.11 b/g/n (2.4Ghz)
+5.0 + A2DP/LEAdvantage
Bluetooth 5.0 + A2DP/LE is newer and faster
vs4.1 + A2DP
+Type-CAdvantage
Reversible connector, you can stick in a USB-C cable any which way; either side is up.
vsMicroUSB 2.0
193 grams (6.76 ounces)vs+137 grams (4.8 ounces)41%
Lighter
TFT PLSvs+TFT IPS LCDAdvantage
TFT IPS LCD display is brighter and more vivid
270 PPIvs+294 PPI9%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
1 slot (Single-SIM)
(dedicated slot)
vs+2 slots (Dual-SIM)
(dedicated slot)Advantage
It's more advantageous to have more than one phone operator in the same device

26 Common items in both devices
eMMC 5.1
Plastic body, glass front
16 million
LED flash
Only digital zoom
PDAF: phase detection autofocus / Autofocus
EIS: Digital stabilization
+19 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differencesClear highlight
Physical featuresSamsung Galaxy A21 (SM-A215U)Xiaomi Redmi Go (16GB)
ModelGalaxy A21 (SM-A215U)Redmi Go (16GB)
Other model namesGalaxy A21 SM-A215U (Sprint, T-Mobile, US Cellular, Verizon)Xiaomi Redmi Go M1903C3GG (Android Go)
Country or region availableUSA
USA
(Global, International)
(Global, International)
BrandSamsungXiaomi
Release dateJune, 2020February, 2019
Depth8.1 millimeters (0.32 inches)8.35 millimeters (0.33 inches)
Size (width x height)76.7 x 167.8 millimeters (3.02 x 6.61 in)70.1 x 140.4 millimeters (2.76 x 5.53 in)
Weight193 grams (6.76 ounces)137 grams (4.8 ounces)
Qwerty physical keyboardNot supportedNot supported
AntennaInternal antennaInternal antenna
Build, materialsPlastic body, glass frontPlastic body, glass front
Protection against water and othersNot supportedNot supported
System (OS)Samsung Galaxy A21 (SM-A215U)Xiaomi Redmi Go (16GB)
Operating systemAndroid 10Android 8.1 Oreo
Firmware updatefeature not registeredfeature not registered
HardwareSamsung Galaxy A21 (SM-A215U)Xiaomi Redmi Go (16GB)
Chipset64bit - MediaTek MT6765 Helio P35 (12nm)64bit - Qualcomm Snapdragon 425 MSM8917 (28nm)
CPU processorOcta-Core, 2 processors:
2.3Ghz Quad-Core ARM Cortex-A53
1.8Ghz Quad-Core ARM Cortex-A53
1.4Ghz Quad-Core ARM Cortex-A53
GPU graphical controllerPowerVR GE8320 680MhzQualcomm Adreno 308 500Mhz
RAM memory3GB LPDDR31GB LPDDR3
Internal storage32GB (20GB available)
eMMC 5.1
16GB (12GB available)
eMMC 5.1
External storageUntil 512GB microSD, microSDXC
(dedicated slot)
Until 128GB microSD, microSDXC
(dedicated slot)
DisplaySamsung Galaxy A21 (SM-A215U)Xiaomi Redmi Go (16GB)
Display typeTFT PLSTFT IPS LCD
Screen size6.5" inches5" inches
Screen-to-body ratio~79.3% (screen-to-body ratio)~70% (screen-to-body ratio)
Display resolution720x1600 pixels (20:9)720x1280 pixels
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)270 PPI294 PPI
Colors16 million16 million
Scratch-resistant glassNot supportedNot supported
Display features60Hzfeature not registered
Mobile networksSamsung Galaxy A21 (SM-A215U)Xiaomi Redmi Go (16GB)
Dual-SIMNot supportedDual-SIM Standby - Call active on one sim card
(dedicated slot)
SIM card1 slot (Single-SIM)
nano-SIM (4FF)
2 slots (Dual-SIM)
nano-SIM (4FF)
Maximum download/upload150/50 Mbps150/50 Mbps
Network technology2G, 3G, 4G2G, 3G, 4G
Frequency, bandsExpand band detailsCollapse details
GSM Mhz bandQuad-Band 850/900/1800/1900Quad-Band 850/900/1800/1900
Primary 2G networkCDMA 800/1900, GSM 850/900/1800/1900GSM 850/900/1800/1900
Primary 3G networkCDMA2000 1xEV-DO
UMTS 850/900/1700/1900/2100
UMTS 850/900/1700/1900/2100
Primary 4G networkLTE Cat4 (1, 2, 3, 5, 7, 8, 20, 28)
TD-LTE (38, 40, 41)
VoLTE
LTE Cat4 (Bands 1, 2, 3, 4, 5, 7, 8, 20, 28)
TD-LTE (Bands 38, 40, 41)
Primary 5G networkNot supportedNot supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTEGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE
Secondary 2G networkNot supportedGSM 850/900/1800/1900
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkNot supportedGPRS, EDGE
CallingSamsung Galaxy A21 (SM-A215U)Xiaomi Redmi Go (16GB)
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
SpeakerphoneSupportedSupported
Video callingSupportedSupported
Call controlVoice dialing, Voice recorder, Voice commandsVoice dialing, Voice recorder
CameraSamsung Galaxy A21 (SM-A215U)Xiaomi Redmi Go (16GB)
Back camera (main camera)(quad camera)
16 megapixels
8MP ultrawidef/2.21/4.0"1.12µm
2MP macrof/2.4
2MP depthf/2.4
8 megapixels
Main camera resolution4608x3456 pixels3264x2448 pixels
Video recording (primary)Full HD (1920x1080) 30 fpsFull HD (1920x1080) 30 fps
FlashLED flashLED flash
Focal aperturef/1.8 (aperture)f/2.0 (aperture)
Focal lengthfeature not registeredfeature not registered
Sensor size1/3.06" inchesfeature not registered
Pixel size1µm pixel1.12µm pixel
AutofocusPDAF: phase detection autofocusAutofocus
Touch focusSupportedSupported
Image stabilizationEIS: Digital stabilizationEIS: Digital stabilization
ZoomOnly digital zoomOnly digital zoom
Face/smile detectionFace detection, Smile detectionFace detection, Smile detection
BSI sensorNot supportedNot supported
HDRHDR photo on both camerasHDR photo on both cameras
2ª cameraSamsung Galaxy A21 (SM-A215U)Xiaomi Redmi Go (16GB)
Front camera (secondary)13 megapixels5 megapixels
Front camera resolution4128x3096 pixels2560x1920 pixels
Video recording (secondary)Full HD (1920x1080)HD (1280x720)
Front flashNot supportedNot supported
Focal aperturef/2.0 (aperture)f/2.2 (aperture)
Focal lengthfeature not registeredfeature not registered
Sensor sizefeature not registeredfeature not registered
Pixel size1.12µm pixel1.12µm pixel
MultimediaSamsung Galaxy A21 (SM-A215U)Xiaomi Redmi Go (16GB)
RadioFMFM
TVNot supportedNot supported
Video formatsMP4, H.265, H.264, H.263, XviD, MKVMP4, H.265, H.264, H.263
Audio formatsMP3, WAV, WMA, eAAC+, FLACMP3, WAV, WMA, eAAC+, FLAC
ConnectivitySamsung Galaxy A21 (SM-A215U)Xiaomi Redmi Go (16GB)
USBUSB 2.0 Type-C reversible connectorMicroUSB 2.0
TV outputNot supportedNot supported
Audio output3.5mm jack3.5mm jack
Bluetooth5.0 + A2DP/LE4.1 + A2DP
WiFi802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO802.11 b/g/n (2.4Ghz)
DLNANot supportedNot supported
NFCNot supportedNot supported
GPSA-GPS, GeoTagging, GLONASSA-GPS, GeoTagging, GLONASS, BeiDou
Infrared portNot supportedNot supported
Other functionsSamsung Galaxy A21 (SM-A215U)Xiaomi Redmi Go (16GB)
Active noise cancellationSupportedSupported
Vibrating alertSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
SensorsAccelerometer
Proximity sensor
Compass
Ambient Light sensor
Gyroscope
Face unlock
Fingerprint sensor (rear-mounted)
Accelerometer
Proximity sensor
Ambient Light sensor
Other features- Colors: Black
- One UI 2.0
- WiFi direct, hotspot
- Colors: Black, Blue
- Android Go
- WiFi direct, hotspot
Power supplySamsung Galaxy A21 (SM-A215U)Xiaomi Redmi Go (16GB)
BatteryLiPo: Li-Ion polymer (Non removable)Li-Ion: Lithium-Ion (Non removable)
Battery capacity4000 mAh3000 mAh
Charger, watts15W Fast battery charging5W (5V/1A) Standard charging
Talk time autonomyfeature not registered720 minutes | 12 hours | 0.5 day
Standbyfeature not registered14400 minutes | 240 hours | 10 days
Radiation rateSamsung Galaxy A21 (SM-A215U)Xiaomi Redmi Go (16GB)
SAR 1.6W/kg (USA, Mexico, etc.)0.6W/kg (head) | 1.27W/kg (body)feature not registered
SAR 2W/kg (Europe, UK, etc.)feature not registeredfeature not registered
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