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Oppo A31 vs Vivo Y21

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Oppo A31
Total value: 5,00
User opinions: 0
Vivo Y21
Total value: 5,33
User opinions: 0
Redmi Note 8 Pro
Total value: 6,89
User opinions: 0
Realme C21Y
Total value: 5,39
User opinions: 0
Type TouchTouchTouchTouch
Waterproofness & dust-resistance No dataNo dataIP52No data
Dimensions 131.90 x 65.54 x 8.03 mm130.70 x 66.40 x 9.20 mm161.30 x 76.40 x 8.79 mm164.50 x 76.00 x 9.10 mm
Weight 135.00 gNo data199.80 g194.00 g
Display size 4.50" 4.50" 6.53" 6.50"
Display Color / IPS TFT
16M colors
480 x 854 px (4.50") 218 ppi		Color / IPS TFT
16M colors
480 x 854 px (4.50") 218 ppi		Color / IPS TFT
16M colors
1080 x 2340 px (6.53") 395 ppi		Color / IPS TFT
16M colors
60 Hz
720 x 1600 px (6.50") 270 ppi
Display protection
No
Buy screen protector icon_info
No
Buy screen protector icon_info
Corning Gorilla Glass
Buy screen protector icon_info
Corning Gorilla Glass
Buy screen protector icon_info
Additional display NoNoNoNo
Protection of the secondary display NoNoNoNo
Standard battery Li-Ion 2000 mAhBuy powerbank icon_infoLi-Ion 1900 mAhBuy powerbank icon_infoLi-Po 4500 mAhBuy powerbank icon_infoLi-Po 5000 mAhBuy powerbank icon_info
Quick battery charging NoNoQuick Charge 4+Yes
Wireless battery charging NoNoNoNo
Internal memory 8 GB16 GB128 GB, 64 GB, 256 GB32 GB, 64 GB
End-user memory No dataNo dataNo data44 GB
RAM memory 1 GB1 GB6 GB, 8 GB3 GB, 4 GB
Memory cards Yes
microSD, microSDHC, microSDXC
up to 128 GBBuy memory card icon_info		Yes
microSD, microSDHC, microSDXC
up to 128 GBBuy memory card icon_info		Yes
microSD, microSDHC, microSDXC
up to 256 GBBuy memory card icon_info		Yes
microSD, microSDHC, microSDXC
up to 256 GBBuy memory card icon_info
Operating system Android 4.4 KitKatAndroid 5.1 LollipopAndroid 9.0 PieAndroid 11
Interface ColorOS 2.0.1Funtouch 2.1MIUI 10realme UI
Processor Qualcomm Snapdragon 410 8916MediaTek MT6580MediaTek Helio G90TUnisoc Tiger T610 UMS512
Processor clock 1200 MHz1300 MHz2000 MHz1800 MHz
GPU Adreno 306ARM Mali-400 MP2 500 MHzARM Mali-G76 3EEMC4 @800 MHzARM Mali G52 MP2 @614 MHz
Touchscreen YesYesYesYes
DualSIM YesNoYesYes
SIM cards standard DualSIM(microSIM, nanoSIM) No data DualSIM(nanoSIM, nanoSIM) DualSIM(nanoSIM, nanoSIM)
DualSIM mode No datanddual standbydual standby
Hybrid DualSIM NondNo dataNo
Announced 2Q 2015No data3Q 20192Q 2021
Other names A31t-Xiaomi Redmi Note 8 ProRMX3261; RMX3263
GSM frequencies 850 900 1800 1900 850 900 1800 1900 850 900 1800 1900 850 900 1800 1900
UMTS No850 900 2100 850 900 1900 2100 850 900 2100
LTE standard TDD LTE: 2600, 2500, 2300, 1900NoFDD LTE: 2600, 2100, 1900, 1800, 1700, 900, 850, 800, 700
TDD LTE: 2600, 2500, 2300, 2100, 1900		FDD LTE: 2600, 2100, 1800, 900, 850, 800, 700
TDD LTE: 2600, 2500, 2300
Standard 5G No dataNo dataNoNo
CDMA NoNoNoNo
Standard TD-SCDMA 1900 2000 No1900 2000 No
UMA NoNoNoNo
A D V E R T I S E M E N T
CAMERAS - BACK

CAMERAS - BACK

First camera YesYesYesYes
Camera type No dataNo dataStandardStandard
Photo sensor model No dataNo dataSamsung S5KGW1No data
Photo matrix 8 Mpx5 Mpx64 Mpx13 Mpx
Sensor size No dataNo data1/1,7No data
Pixel size No dataNo data0,8 µm1,12 µm
Resolution 3264x2448 px2592x1944 px9248x6936 pxNo data
Optical zoom NoNoNoNo
Digital zoom No dataNo dataNo data4x
Number of lenses No dataNo dataNo data5
Field of view No dataNo data79 °No data
Focal length No dataNo data26 mmNo data
Flash Yes LEDYes LEDYes LEDYes LED
Dual-colour LED flash NoNoNoNo
Video resolution 1920x1080 pxNo data3840x2160 px1920x1080 px
Video formats H.263, H.264, MPEG4MPEG4, H.263, H.264H.264, H.265, MPEG4 - 30 fpsH.263, H.264, MPEG4 - 30 fps
Additional AF-AF, f/1.89AF, f/2.2
Second camera NoNoYesYes
Camera type ndndWide-angleMacro
Photo matrix ndnd8 Mpx2 Mpx
Pixel size ndnd1,12 µmNo data
Optical zoom ndndNoNo
Number of lenses ndndNo data3
Field of view ndnd120 °No data
Focal length ndnd13 mmNo data
Flash ndndYes LEDYes LED
Dual-colour LED flash ndndNoNo
Video formats ndndH.264, H.265, MPEG4 - 30 fpsH.263, H.264, MPEG4 - 30 fps
Additional ndndFF, f/2.2FF, f/2.4
Third camera NoNoYesYes
Camera type ndndNo dataDepth of field
Photo matrix ndnd2 Mpx2 Mpx
Pixel size ndnd1,75 µmNo data
Optical zoom ndndNoNo
Number of lenses ndndNo data3
Flash ndndYes LEDNo
Dual-colour LED flash ndndNoNo
Video formats ndndH.264, H.265, MPEG4 - 30 fpsH.263, H.264, MPEG4 - 30 fps
Additional ndndAFFF, f/2.4
Fourth camera NoNoYesNo
Photo matrix ndnd2 Mpxnd
Pixel size ndnd1,75 µmnd
Optical zoom ndndNond
Flash ndndYes LEDnd
Dual-colour LED flash ndndNond
Video formats ndndH.264, H.265, MPEG4 - 30 fpsnd
Additional ndndFFnd
CAMERAS - FRONT

CAMERAS - FRONT

First camera YesYesYesYes
Camera type No dataNo dataNo dataPortrait
Photo sensor model No dataNo dataSamsung S5K3T1No data
Photo matrix 2 Mpx2 Mpx20 Mpx5 Mpx
Resolution 1600x1200 px1600x1200 px5184x3880 pxNo data
Optical zoom NoNoNoNo
Number of lenses No dataNo dataNo data3
Field of view No dataNo data108 °No data
Flash NoNoNoNo
Dual-colour LED flash NoNoNoNo
Video resolution No dataNo data1920x1080 pxNo data
Video formats H.263, H.264, MPEG4MPEG4, H.263, H.264H.264, H.265, MPEG4 - 30 fpsH.263, H.264, MPEG4 - 30 fps
Additional FF-FFFF, f/2.2
SENSORS

SENSORS

Accelerometer NoYesYesYes
Proximity NoYesYesYes
Light NoYesYesYes
Magnetometer NoNoYesYes
Gyroscope NoNoYesNo
Barometer NoNoNoNo
Altimeter NoNoNoNo
Gravity NoNoYesYes
Hall-effect NoNoNo dataNo
Iris scanner NoNoNoNo
Fingerprint scanner NoNoYesYes
Thermometer NoNoNoNo
Hygrometer NoNoNoNo
Data transfer

Data transfer

xHTML YesYesYesYes
WAP Yes
v2.0		Yes
v2.0		Yes
v2.0		Yes
v2.0
HSCSD NoNoNoNo
HSDPA Yes
42.00 Mbit/s		YesYes
42.20 Mbit/s		Yes
42.20 Mbit/s
HSUPA Yes
5.76 Mbit/s		YesYes
5.76 Mbit/s		Yes
5.76 Mbit/s
HSPA YesYesYesYes
HSPA+ YesNo dataYesYes
LTE DL YesNo603.00 Mbit/s-
LTE UP YesNo-51.00 Mbit/s
WIMAX+ NoNoNoNo
GPRS Yes
class 12		YesYesYes
EDGE YesYesYesYes
Bluetooth Yes
v4.0		YesYes
v5.0		Yes
v5.0
A2DP Profile YesNo dataYesYes
HDMI NoNoNoNo
WiFi Yes
v802.11 b/g/n		Yes
v802.11 b/g/n		Yes
v802.11 a/b/g/n/ac		Yes
v802.11 b/g/n
WiFi frequencies 2,4 GHz2,4 GHz2,4 GHz; 5 GHz2,4 GHz
WiFi Direct NoNoYesYes
WiFi Display NoNoNo dataNo
DLNA NoNoNoNo
Miracast NoNoNoNo
WiFi hotspot YesYesYesYes
IrDA NoNoYesNo
USB Yes
v2.0		Yes
v2.0		Yes
v2.0 Type-C		Yes
v2.0
GPS YesYesYesYes
A-GPS YesYesYesYes
GLONASS No dataNoYesYes
Beidou NoNoYesYes
Galileo No dataNo dataNoNo
QZSS No dataNo dataNoNo
NFC YesNoYesNo
COMMUNICATION AND MESSAGING

COMMUNICATION AND MESSAGING

Call waiting YesYesYesYes
Conferency YesYesYesYes
Call forwarding YesYesYesYes
Push To Talk NoNoNoNo
Instant Messenger YesYesYesYes
SMS YesYesYesYes
EMS NoNoNoNo
MMS YesYesYesYes
Dictionary Yes
XT9		Yes
XT9		Yes
T9		Yes
T9
Swype NoNoNoNo
e-mail client Yes
POP3, IMAP4, SMTP		Yes
POP3, IMAP4, SMTP		Yes
POP3, IMAP4, SMTP		Yes
POP3, IMAP4, SMTP
Hardware QWERTY keyboard NoNoNoNo
RSS Reader YesYesYesYes
Multimedia

Multimedia

Radio No dataNo dataYesYes
MP3 YesYesYesYes
Stereo speakers NoNoNoNo
Audio Jack 3.5 mm3.5 mm3.5 mm3.5 mm
HD Voice NoNoYesYes
Sound formats AAC, AAC+, APE, FLAC, MKA, OGG, WAV, eAAC+AAC, AAC+, AMR, APE, FLAC, OGG, WAV, WMAAAC, AAC+, AMR, FLAC, MID, MKA, OGG, WAV, eAAC+AAC, AAC+, AMR, APE, FLAC, MID, MKA, OGG, WAV, WMA, eAAC+
Polyphony Yes
64 voices		YesYesYes
Video ringtone NoNoNoNo
Ring composer NoNoNoNo
Games NoNo dataNoNo
Java Yes
Dalvik		Yes
ART		Yes
ART		Yes
ART
Videophone No dataNoNoNo
DVB-H television NoNoNoNo
TV-Out NoNoNoNo
PIM AND ADDITIONAL FUNCTIONS

PIM AND ADDITIONAL FUNCTIONS

Watch YesYesYesYes
Stopwatch YesYesYesYes
Alarm YesYesYesYes
Calculator YesYesYesYes
Currency converter NoNoNoNo
Organizer YesYesYesYes
Calendar YesYesYesYes
Flight mode YesYesYesYes
SyncML NoNoNoNo
Data and fax YesYesYesYes
Screensaver YesYesYesYes
Themes YesYesYesYes
Interchangeable covers NoNoNoNo
Voice dial YesYesYesYes
Speakerphone YesYesYesYes
Recorder YesYesYesYes
Vibrations YesYesYesYes
Oppo A31
Total value: 5,00
Vivo Y21
Total value: 5,33
Redmi Note 8 Pro
Total value: 6,89
Realme C21Y
Total value: 5,39
A D V E R T I S E M E N T