Comparison between:
- Realme 3i
- Lenovo K8 Note
- Xiaomi Redmi Note 5 Pro SD636 India

Brand and model

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

Realme 3iLenovo K8 NoteXiaomi Redmi Note 5 Pro SD636 India
Realme 3i
Prices
Lenovo K8 Note
Prices
Xiaomi Redmi Note 5 Pro SD636 India
Prices
Model aliasRMX1827XT1902-3-

Design

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

Width75.6 mm
7.56 cm
0.25 ft
2.98 in
75.9 mm
7.59 cm
0.25 ft
2.99 in
75.4 mm
7.54 cm
0.25 ft
2.97 in
Height156.1 mm
15.61 cm
0.51 ft
6.15 in
154.5 mm
15.45 cm
0.51 ft
6.08 in
158.6 mm
15.86 cm
0.52 ft
6.24 in
Thickness8.3 mm
0.83 cm
0.03 ft
0.33 in
8.5 mm
0.85 cm
0.03 ft
0.33 in
8.05 mm
0.81 cm
0.03 ft
0.32 in
Weight175 g
0.39 lbs
6.17 oz
180 g
0.4 lbs
6.35 oz
181 g
0.4 lbs
6.38 oz
Volume97.95 cm³
5.95 in³
99.68 cm³
6.05 in³
96.27 cm³
5.85 in³
ColorsBlue
Red
Black
Gold
Black
Black
Gold
Blue
Rose-gold
Body materialsPlasticMetal
Polycarbonate
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-SIM / microSD
Nano-SIM
Number of SIM cards222
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)-

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
W-CDMA--W-CDMA 850 MHz
W-CDMA 900 MHz
W-CDMA 1900 MHz
W-CDMA 2100 MHz
UMTSUMTS 850 MHz
UMTS 900 MHz
UMTS 2100 MHz
UMTS 850 MHz
UMTS 900 MHz
UMTS 2100 MHz
-
LTELTE 850 MHz
LTE 900 MHz
LTE 1800 MHz
LTE 2100 MHz
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-TDD 2300 MHz (B40)
LTE 850 MHz
LTE 1800 MHz
LTE 2100 MHz
LTE-TDD 2300 MHz (B40)
LTE-TDD 2500 MHz (B41)

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 12
UMTS
EDGE
GPRS
HSPA+
LTE Cat 6
UMTS
EDGE
GPRS
HSPA+
LTE

Operating system

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

Operating system (OS)ColorOS 6.0 (Android 9.0 Pie)Android 7.1.1 Nougat
Android 8.0 Oreo
MIUI V9.2 (Android 7.1.1 Nougat)
MIUI V9.5 (Android 8.1 Oreo)
MIUI V10.0 (Android 8.1 Oreo)
MIUI (Android 9.0 Pie)

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 P60 (MT6771)MediaTek Helio X23 (MT6797D)Qualcomm Snapdragon 636
Process technology12 nm20 nm14 nm
CPU4x 2.0 GHz ARM Cortex-A73, 4x 2.0 GHz ARM Cortex-A532x 2.3 GHz ARM Cortex-A72, 4x 1.85 GHz ARM Cortex-A53, 4x 1.4 GHz ARM Cortex-A534x 1.8 GHz Kryo 260, 4x 1.6 GHz Kryo 260
CPU bits64 bit64 bit64 bit
Instruction setARMv8-AARMv8-AARMv8
CPU cores8108
CPU frequency2000 MHz2300 MHz1800 MHz
GPUARM Mali-G72 MP3ARM Mali-T880 MP4Qualcomm Adreno 509
GPU cores34-
GPU frequency800 MHz780 MHz-
RAM capacity3 GB
4 GB
3 GB
4 GB
4 GB
6 GB
RAM typeLPDDR4XLPDDR3LPDDR4X
RAM channelsDouble channelDouble channelDouble channel
RAM frequency1800 MHz800 MHz1333 MHz

Storage

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

Storage32 GB
64 GB
32 GB
64 GB
64 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

Display

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

Type/technologyIPSIPSIPS
Diagonal size6.22 in
157.99 mm
15.8 cm
5.5 in
139.7 mm
13.97 cm
5.99 in
152.15 mm
15.21 cm
Width2.66 in
67.63 mm
6.76 cm
2.7 in
68.49 mm
6.85 cm
2.68 in
68.04 mm
6.8 cm
Height5.62 in
142.78 mm
14.28 cm
4.79 in
121.76 mm
12.18 cm
5.36 in
136.08 mm
13.61 cm
Aspect ratio2.111:11.778:1
16:9
2:1
2:1 (18:9)
Resolution720 x 1520 pixels1080 x 1920 pixels1080 x 2160 pixels
Pixel density270 ppi
106 ppcm
401 ppi
157 ppcm
403 ppi
158 ppcm
Color depth24 bit
16777216 colors
24 bit
16777216 colors
24 bit
16777216 colors
Display area82.09 %71.34 %77.68 %
Other featuresCapacitive
Multi-touch
Scratch resistant
Capacitive
Multi-touch
Scratch resistant
Capacitive
Multi-touch
Scratch resistant
Corning Gorilla Glass 3
2.5D curved glass screen
LTPS (Low Temperature PolySilicon)
1500:1 contrast ratio
450 cd/m²
Corning Gorilla Glass 3
2.5D curved glass screen
450 cd/m²
Corning Gorilla Glass
2.5D curved glass screen
1000:1 contrast ratio
450 cd/m²
84% NTSC

Sensors

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

SensorsProximity
Light
Accelerometer
Compass
Fingerprint
Proximity
Light
Accelerometer
Compass
Gyroscope
Fingerprint
Proximity
Light
Accelerometer
Compass
Gyroscope
Fingerprint
Hall

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 model-OmniVision OV13855Sony IMX486 Exmor RS
Sensor typeCMOSPureCelCMOS
Sensor size-4.75 x 3.54 mm
0.23 in
-
Sensor format--1/2.9"
Pixel size1.12 µm
0.001120 mm
1.142 µm
0.001142 mm
1.25 µm
0.001250 mm
Crop factor-7.31-
Aperturef/1.8f/2f/2.2
Focal length and 35 mm equivalent--3.81 mm
Number of lenses5--
Flash typeDual LEDDual LEDDual LED
Image resolution4160 x 3120 pixels
12.98 MP
4160 x 3120 pixels
12.98 MP
4000 x 3000 pixels
12 MP
Video resolution1920 x 1080 pixels
2.07 MP
1920 x 1080 pixels
2.07 MP
1920 x 1080 pixels
2.07 MP
Video FPS30 fps30 fps30 fps
FeaturesAutofocus
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
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)
720p @ 90 fps
Secondary rear camera - 2 MP
Aperture size - f/2.4 (#2)
Sensor type - PureCel Plus
Secondary rear camera - 5 MP
Sensor model - Samsung S5K5E2 (#2)
Sensor type - CMOS BSI (#2)
Sensor size - 2.9 x 2.15 mm (#2)
Secondary rear camera - 5 MP
Pixel size - 1.12 μm (#2)
Aperture size - f/2.0 (#2)

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.

Sensor model--Sony IMX376 Exmor RS
Sensor typeCMOS-CMOS BSI
Sensor format--1/2.78"
Pixel size1.12 µm
0.001120 mm
-1 µm
0.001000 mm
Aperturef/2f/2f/2.2
Number of lenses5--
Auxiliary light-LEDLED
Image resolution4160 x 3120 pixels
12.98 MP
4160 x 3120 pixels
12.98 MP
5384 x 3752 pixels
20.2 MP
Video resolution1920 x 1080 pixels
2.07 MP
1280 x 720 pixels
0.92 MP
1920 x 1080 pixels
2.07 MP
Video FPS30 fps30 fps30 fps
FeaturesFace unlock-Face unlock

Audio

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

SpeakerLoudspeaker
Earpiece
Loudspeaker
Earpiece
Loudspeaker
Earpiece
-Dolby Atmos-

Radio

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

RadioYesYesYes

Tracking/Positioning

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

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

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
802.11b
802.11g
802.11n
802.11n 5GHz
802.11ac
Dual band
Wi-Fi Hotspot
Wi-Fi Direct
802.11a
802.11b
802.11g
802.11n
802.11n 5GHz
802.11ac
Dual band
Wi-Fi Hotspot
Wi-Fi Direct
Wi-Fi Display

Bluetooth

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

Version4.24.25.0
FeaturesA2DP
EDR
LE
A2DP
LE
A2DP
EDR
HID
LE

USB

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

Connector typeMicro USBMicro USBMicro USB
Version2.02.02.0
FeaturesCharging
Mass storage
On-The-Go
Charging
Mass storage
On-The-Go
Charging
Host
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 jackYesYesYes

Connectivity

Information about other important connectivity technologies supported by the devices.

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

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
AMR
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
AAC
AAC+
AMR
AMR-WB
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
AAC
AAC+
AMR
AMR-WB
aptX
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
H.265
MKV
MP4
WebM
WMV
Xvid
3GPP
AVI
H.263
H.264
MKV
QuickTime
MP4
WebM
WMV
Xvid
3GPP
AVI
DivX
H.263
H.264
H.265
MKV
QuickTime
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.

Capacity4230 mAh4000 mAh4000 mAh
TypeLi-PolymerLi-PolymerLi-Polymer
2G talk time-25 h
1500 min
1 days
-
2G stand-by time-378 h
22680 min
15.8 days
-
3G talk time-25 h
1500 min
1 days
-
3G stand-by time-378 h
22680 min
15.8 days
-
4G talk time-24 h 42 min
24.7 h
1482 min
1 days
-
4G stand-by time-378 h
22680 min
15.8 days
-
Charger output power5 V / 2 A5 V / 3 A5 V / 2 A
Quick charge technology--Qualcomm Quick Charge 2.0
FeaturesFast charging
Non-removable
Fast charging
Non-removable
Fast charging
Non-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 (USA)-0.66 W/kg1.188 W/kg
Body SAR (USA)-1.157 W/kg0.334 W/kg

Additional features

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

Additional featuresSAR (Specific Absorption Rate) India: head - 1.177 W/kg; body - 0.456 W/kgP2i nano-coating-
 Realme 3iLenovo K8 NoteXiaomi Redmi Note 5 Pro SD636 India