Comparison between:
- Xiaomi Redmi 6A
- Koobee S506m
- Infinix Smart 2
- Oppo A3s

Brand and model

Information about the brand, model and model alias (if any) of a specific device.

Xiaomi Redmi 6AKoobee S506mInfinix Smart 2Oppo A3s
Xiaomi Redmi 6A
Prices
Koobee S506mInfinix Smart 2Oppo A3s
Prices
Model aliasRedmi6A-Smart2
X5515F
-

Design

Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.

Width71.5 mm
7.15 cm
0.235 ft
2.815 in
71.3 mm
7.13 cm
0.234 ft
2.807 in
71 mm
7.1 cm
0.233 ft
2.795 in
75.6 mm
7.56 cm
0.248 ft
2.976 in
Height147.5 mm
14.75 cm
0.484 ft
5.807 in
146.8 mm
14.68 cm
0.482 ft
5.78 in
148 mm
14.8 cm
0.486 ft
5.827 in
156.2 mm
15.62 cm
0.512 ft
6.15 in
Thickness8.3 mm
0.83 cm
0.027 ft
0.327 in
8.5 mm
0.85 cm
0.028 ft
0.335 in
8.4 mm
0.84 cm
0.028 ft
0.331 in
8.2 mm
0.82 cm
0.027 ft
0.323 in
Weight145 g
0.32 lbs
5.11 oz
160 g
0.35 lbs
5.64 oz
138 g
0.3 lbs
4.87 oz
168 g
0.37 lbs
5.93 oz
Volume87.53 cm³
5.32 in³
88.97 cm³
5.4 in³
88.27 cm³
5.36 in³
96.83 cm³
5.88 in³
ColorsGold
Rose-gold
Blue
Gray
Purple
Champagne
Red
Gold
Black
Blue
Purple
Red
Body materialsPolycarbonatePlasticPlastic
Metal
Aluminium alloy

SIM card

The Subscriber Identity Module (SIM) is used in mobile devices for storing data authenticating the subscribers of mobile services.

SIM card typeNano-SIMNano-SIMNano-SIMNano-SIM
Number of SIM cards2222
FeaturesDual SIM stand-by (Both cards are active. When one is busy, the other is not active)-Dual SIM stand-by (Both cards are active. When one is busy, the other is not active)Dual SIM stand-by (Both cards are active. When one is busy, the other is not active)

Networks

A mobile (cellular) network is a radio system, which allows a large number of mobile devices to communicate with each other.

GSMGSM 850 MHz
GSM 900 MHz
GSM 1800 MHz
GSM 1900 MHz
GSM 850 MHz
GSM 900 MHz
GSM 1800 MHz
GSM 1900 MHz
GSM 850 MHz
GSM 900 MHz
GSM 1800 MHz
GSM 1900 MHz
GSM 850 MHz
GSM 900 MHz
GSM 1800 MHz
GSM 1900 MHz
CDMACDMA 800 MHzCDMA 800 MHz--
W-CDMA-W-CDMA 850 MHz
W-CDMA 900 MHz
W-CDMA 2100 MHz
W-CDMA 900 MHz
W-CDMA 2100 MHz
-
TD-SCDMATD-SCDMA 1880-1920 MHz
TD-SCDMA 2010-2025 MHz
TD-SCDMA 1880-1920 MHz
TD-SCDMA 2010-2025 MHz
--
UMTSUMTS 850 MHz
UMTS 900 MHz
UMTS 1900 MHz
UMTS 2100 MHz
--UMTS 850 MHz
UMTS 900 MHz
UMTS 2100 MHz
LTELTE-TDD 1900 MHz (B39)
LTE-TDD 2300 MHz (B40)
LTE-TDD 2500 MHz (B41)
LTE-TDD 2600 MHz (B38)
LTE 850 MHz
LTE 900 MHz
LTE 1800 MHz
LTE 2100 MHz
LTE 2600 MHz
LTE 850 MHz
LTE 900 MHz
LTE 1800 MHz
LTE 2100 MHz
LTE-TDD 1900 MHz (B39)
LTE-TDD 2300 MHz (B40)
LTE-TDD 2500 MHz (B41)
LTE-TDD 2600 MHz (B38)
LTE 800 MHz
LTE 1800 MHz
LTE 2100 MHz
LTE 2600 MHz
LTE-TDD 2300 MHz (B40)
LTE-TDD 1900 MHz (B39)
LTE-TDD 2300 MHz (B40)
LTE-TDD 2500 MHz (B41)
LTE-TDD 2600 MHz (B38)
LTE 850 MHz
LTE 900 MHz
LTE 1800 MHz
LTE 2100 MHz

Mobile network technologies and bandwidth

Communication between devices within mobile networks is realized via various generations of network technologies, which provide different bandwidth.

Mobile network technologiesUMTS
EDGE
GPRS
HSPA+
LTE Cat 4
EV-DO Rev. A
TD-SCDMA
TD-HSDPA
UMTS
EDGE
GPRS
HSPA+
LTE Cat 4
EV-DO Rev. A
TD-SCDMA
TD-HSDPA
UMTS
EDGE
GPRS
HSPA+
LTE Cat 4
UMTS
EDGE
GPRS
HSPA+
LTE Cat 7

Operating system

Operating system is the system software, which manages and controls the functioning of the hardware components of the device.

Operating system (OS)MIUI V9.6 (Android 8.1 Oreo)
MIUI V10.0 (Android 8.1 Oreo)
MIUI (Android 9.0 Pie)
dido 7.6 (Android 6.0 Marshmallow)X OS Hummingbird 3.3 (Android 8.1 Oreo)ColorOS 5.1 (Android 8.1 Oreo)

System on Chip (SoC)

A system on a chip (SoC) includes into a single chip some of the main hardware components of the mobile device.

SoCMediaTek Helio A22 (MT6761)MediaTek MT6739MediaTek MT6739Qualcomm Snapdragon 450 (SDM450)
Process technology12 nm28 nm28 nm14 nm
CPU4x 2.0 GHz ARM Cortex-A534x 1.5 GHz ARM Cortex-A534x 1.5 GHz ARM Cortex-A538x 1.8 GHz ARM Cortex-A53
CPU bits64 bit64 bit64 bit64 bit
Instruction setARMv8-AARMv8-AARMv8-AARMv8-A
CPU cores4448
CPU frequency2200 MHz1500 MHz1500 MHz1800 MHz
GPUIMG PowerVR GE8300IMG PowerVR GE8100IMG PowerVR GE8100Qualcomm Adreno 506
GPU frequency660 MHz570 MHz570 MHz600 MHz
RAM capacity2 GB
3 GB
4 GB
2 GB
3 GB
2 GB
3 GB
2 GB
3 GB
RAM typeLPDDR3LPDDR3LPDDR3LPDDR3
RAM channelsSingle channelSingle channelSingle channelSingle channel
RAM frequency933 MHz667 MHz667 MHz933 MHz

Storage

Every mobile device has a built-in storage (internal memory) with a fixed capacity.

Storage16 GB
32 GB
64 GB
16 GB
32 GB
16 GB
32 GB
16 GB
32 GB
eMMC 5.1---

Memory cards

Memory cards are used in mobile devices for expanding their external storage capacity.

TypesmicroSD
microSDHC
microSDXC
microSD
microSDHC
microSDXC
microSD
microSDHC
microSDXC
microSD
microSDHC
microSDXC

Display

The display of a mobile device is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc.

Type/technologyIPSIPSIPSIPS
Diagonal size5.45 in
138.43 mm
13.84 cm
5.5 in
139.7 mm
13.97 cm
5.45 in
138.43 mm
13.84 cm
6.2 in
157.48 mm
15.75 cm
Width2.44 in
61.91 mm
6.19 cm
2.46 in
62.48 mm
6.25 cm
2.44 in
61.91 mm
6.19 cm
2.65 in
67.42 mm
6.74 cm
Height4.87 in
123.82 mm
12.38 cm
4.92 in
124.95 mm
12.5 cm
4.87 in
123.82 mm
12.38 cm
5.6 in
142.32 mm
14.23 cm
Aspect ratio2:1
2:1 (18:9)
2:1
2:1 (18:9)
2:1
2:1 (18:9)
2.111:1
Resolution720 x 1440 pixels720 x 1440 pixels720 x 1440 pixels720 x 1520 pixels
Pixel density295 ppi
115 ppcm
293 ppi
115 ppcm
295 ppi
115 ppcm
271 ppi
106 ppcm
Color depth24 bit
16777216 colors
24 bit
16777216 colors
24 bit
16777216 colors
24 bit
16777216 colors
Display area72.92 %74.82 %73.18 %81.51 %
Other featuresCapacitive
Multi-touch
Capacitive
Multi-touch
Capacitive
Multi-touch
Capacitive
Multi-touch
2.5D curved glass screen
1000:1 contrast ratio
2.5D curved glass screen2.5D curved glass screen2.5D curved glass screen
90 Hz refresh rate

Sensors

Different sensors measure different physical quantities and convert them into signals recognizable by the mobile device.

SensorsProximity
Light
Accelerometer
Compass
Proximity
Light
Accelerometer
Proximity
Light
Accelerometer
Compass
Proximity
Light
Accelerometer
Compass

Rear camera

The primary camera of the mobile device is usually placed on its back and can be combined with one or more additional cameras.

Sensor typeCMOSCMOSCMOSCMOS
Pixel size---1.12 µm
0.001120 mm
ISO---100 - 1600
Aperturef/2.2f/2f/2f/2.2
Focal length and 35 mm equivalent3.79 mm---
Number of lenses5--6
Flash typeDual LEDLEDDual LEDDual LED
Image resolution4160 x 3120 pixels
12.98 MP
3264 x 2448 pixels
7.99 MP
4160 x 3120 pixels
12.98 MP
4160 x 3120 pixels
12.98 MP
Video resolution1920 x 1080 pixels
2.07 MP
1280 x 720 pixels
0.92 MP
1280 x 720 pixels
0.92 MP
1920 x 1080 pixels
2.07 MP
Video FPS30 fps30 fps30 fps30 fps
FeaturesAutofocus
Continuous shooting
Digital zoom
Digital image stabilization
Geotagging
Panorama
HDR
Touch focus
Face detection
White balance settings
ISO settings
Exposure compensation
Self-timer
Scene mode
Phase detection autofocus (PDAF)
Autofocus
Continuous shooting
Digital zoom
Geotagging
Panorama
HDR
Touch focus
Face detection
White balance settings
ISO settings
Exposure compensation
Self-timer
Scene mode
Phase detection autofocus (PDAF)
Autofocus
Continuous shooting
Digital zoom
Geotagging
Panorama
HDR
Touch focus
Face detection
White balance settings
ISO settings
Exposure compensation
Scene mode
Autofocus
Continuous shooting
Digital zoom
Geotagging
Panorama
HDR
Touch focus
Face detection
White balance settings
ISO settings
Exposure compensation
Self-timer
Scene mode
Phase detection autofocus (PDAF)
-Blue filter glass-Secondary rear camera - 2 MP
Aperture size - f/2.4

Front camera

Modern smartphones have one or more front cameras and their positioning has led to various design concepts – pop-up camera, rotating camera, notch, punch hole, under-display camera, etc.

Aperturef/2.2-f/2f/2.2
Auxiliary light--Dual LED-
Image resolution2592 x 1944 pixels
5.04 MP
1600 x 1200 pixels
1.92 MP
3264 x 2448 pixels
7.99 MP
3264 x 2448 pixels
7.99 MP
Video resolution1920 x 1080 pixels
2.07 MP
640 x 480 pixels
0.31 MP
640 x 480 pixels
0.31 MP
1280 x 720 pixels
0.92 MP
Video FPS30 fps30 fps30 fps30 fps
FeaturesFace unlockFace unlockFace unlockFace unlock

Audio

Information about the type of speakers and the audio technologies supported by the device.

SpeakerLoudspeaker
Earpiece
Loudspeaker
Earpiece
Loudspeaker
Earpiece
Loudspeaker
Earpiece

Radio

The radio in a mobile device is a built-in FM radio receiver.

RadioYesYesYesNo

Tracking/Positioning

Information about the positioning and navigation technologies supported by the device.

Tracking/PositioningGPS
A-GPS
GLONASS
BeiDou
GPS
A-GPS
GPS
A-GPS
GPS
A-GPS
GLONASS

Wi-Fi

Wi-Fi is a technology that provides wireless data connections between various devices within a short range.

Wi-Fi802.11b
802.11g
802.11n
Wi-Fi Hotspot
Wi-Fi Direct
Wi-Fi Display
802.11b
802.11g
802.11n
Wi-Fi Hotspot
802.11b
802.11g
802.11n
Wi-Fi Hotspot
802.11a
802.11b
802.11g
802.11n
802.11n 5GHz
Dual band
Wi-Fi Hotspot
Wi-Fi Display

Bluetooth

Bluetooth is a standard for secure wireless data transfer between different types of devices over short distances.

Version4.24.04.14.2
FeaturesA2DP
HID
A2DPA2DPA2DP

USB

The Universal Serial Bus (USB) is an industry standard that allows different electronic devices to exchange data.

Connector typeMicro USBMicro USBMicro USBMicro USB
Version2.02.02.02.0
FeaturesCharging
Host
Mass storage
On-The-Go
Charging
Mass storage
Charging
Mass storage
Charging
Mass storage
On-The-Go

Headphone jack

The headphone jack is an audio phone connector, a.k.a. an audio jack. The most widely used one in mobile devices is the 3.5 mm headphone jack.

Headphone jackYesYesYesYes

Connectivity

Information about other important connectivity technologies supported by the devices.

ConnectivityComputer sync
OTA sync
Tethering
VoLTE
Computer sync
OTA sync
Tethering
Computer sync
OTA sync
Tethering
Computer sync
OTA sync
Tethering
VoLTE

Browser

A web browser is a software application for accessing, fetching, displaying and navigating through information on the World Wide Web.

BrowserHTML
HTML5
CSS 3
HTML
HTML5
CSS 3
HTML
HTML5
CSS 3
HTML
HTML5
CSS 3

Audio file formats/codecs

Mobile devices support various audio file formats and codecs, which respectively store and code/decode digital audio data.

Audio file formats/codecsAAC
AAC+
AC3
AMR
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
AAC
AMR
eAAC+
FLAC
M4A
MIDI
MP3
OGG
WMA
WAV
AAC
AMR
eAAC+
MIDI
MP3
WMA
WAV
AAC
AAC+
AMR
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV

Video file formats/codecs

Mobile devices support various video file formats and codecs, which respectively store and code/decode digital video data.

Video file formats/codecs3GPP
AVI
H.263
H.264
MKV
MP4
VC-1
VP8
Xvid
3GPP
AVI
MKV
MP4
WMV
Xvid
3GPP
AVI
MP4
Xvid
3GPP
AVI
DivX
Flash Video
MKV
MP4
WebM
WMV
Xvid

Battery

The batteries of mobile devices differ in capacity and technology. They provide the electrical charge needed for the functioning of the devices.

Capacity3000 mAh2200 mAh3050 mAh4230 mAh
TypeLi-PolymerLi-IonLi-PolymerLi-Polymer
Charger output power5 V / 1 A-5 V / 1.2 A-
FeaturesNon-removable-Non-removableNon-removable

Specific Absorption Rate (SAR)

The SAR rating shows the amount of electromagnetic radiation absorbed by the human body when using a mobile device, expressed in W/kg.

Head SAR (EU)0.656 W/kg-0.551 W/kg-
Body SAR (EU)1.523 W/kg-0.811 W/kg-
Head SAR (USA)0.78 W/kg-0.42 W/kg-
Body SAR (USA)1.17 W/kg-0.983 W/kg-
Head SAR (India)0.746 W/kg---
Body SAR (India)0.715 W/kg---

Additional features

Some devices have additional features, different from the standard ones above, but equally important and worth mentioning.

Additional featuresM1804C3CG - SAR (Specific Absorption Rate) EU: head - 0.656 W/kg; body - 1.523 W/kg
M1804C3CG - SAR (Specific Absorption Rate) US: head - 0.780 W/kg; body - 1.170 W/kg
M1804C3CH - SAR (Specific Absorption Rate) EU: head - 0.442 W/kg; body - 1.356 W/kg
M1804C3CH - SAR (Specific Absorption Rate) US: head - 0.790 W/kg; body - 1.180 W/kg
M1804C3CI - SAR (Specific Absorption Rate) India: head - 0.746 W/kg; body - 0.715 W/kg
---
 Xiaomi Redmi 6AKoobee S506mInfinix Smart 2Oppo A3s