Comparison between:
- Xiaomi Redmi Note 8
- Xiaomi Mi A3
- Vivo S1 Helio P65

Brand and model

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

Xiaomi Redmi Note 8Xiaomi Mi A3Vivo S1 Helio P65
Xiaomi Redmi Note 8
Prices
Xiaomi Mi A3
Prices
Vivo S1 Helio P65
Model aliasRedmi Note8
Red Rice Note 8
Red Rice Note8
C3J
M1908C3JH
M1908C3JG
M1908C3JI
M1906F9SH
M1906F9SI
-

Design

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

Width75.3 mm
7.53 cm
0.25 ft
2.96 in
71.85 mm
7.19 cm
0.24 ft
2.83 in
75.23 mm
7.52 cm
0.25 ft
2.96 in
Height158.3 mm
15.83 cm
0.52 ft
6.23 in
153.48 mm
15.35 cm
0.5 ft
6.04 in
159.53 mm
15.95 cm
0.52 ft
6.28 in
Thickness8.35 mm
0.84 cm
0.03 ft
0.33 in
8.48 mm
0.85 cm
0.03 ft
0.33 in
8.13 mm
0.81 cm
0.03 ft
0.32 in
Weight190 g
0.42 lbs
6.7 oz
173 g
0.38 lbs
6.13 oz
179 g
0.39 lbs
6.31 oz
Volume99.53 cm³
6.04 in³
93.46 cm³
5.68 in³
97.57 cm³
5.93 in³
ColorsMeteorite Black
Dream Blue
White
Nebula Purple
Black
White
Blue
Blue
Green
Body materialsAluminium alloy
Plastic
Glass
Plastic
Plastic
CertificationIP52--

SIM card

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

SIM card typeNano-SIM
Nano-SIM / microSD
Nano-SIM / microSD
Nano-SIM
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 (B5)
GSM 900 MHz (B8)
GSM 1800 MHz (B3)
GSM 1900 MHz (B2)
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 MHz (BC0)--
W-CDMAW-CDMA 850 MHz (B5)
W-CDMA 900 MHz (B8)
W-CDMA 2100 MHz (B1)
W-CDMA 850 MHz
W-CDMA 900 MHz
W-CDMA 1700 MHz
W-CDMA 1900 MHz
W-CDMA 2100 MHz
W-CDMA 850 MHz
W-CDMA 900 MHz
W-CDMA 2100 MHz
TD-SCDMATD-SCDMA 1900 MHz
TD-SCDMA 2000 MHz
--
LTELTE-FDD 850 MHz (B5)
LTE-FDD 900 MHz (B8)
LTE-FDD 1800 MHz (B3)
LTE-FDD 2100 MHz (B1)
LTE-FDD 2600 MHz (B7)
LTE-TDD 1900 MHz (B39)
LTE-TDD 2000 MHz (B34)
LTE-TDD 2300 MHz (B40)
LTE-TDD 2500 MHz (B41)
LTE-TDD 2600 MHz (B38)
LTE-TDD 1900 MHz (B39)
LTE-TDD 2300 MHz (B40)
LTE-TDD 2500 MHz (B41)
LTE-TDD 2600 MHz (B38)
LTE 800 MHz
LTE 850 MHz
LTE 900 MHz
LTE 1700/2100 MHz
LTE 1800 MHz
LTE 1900 MHz
LTE 2100 MHz
LTE 2600 MHz
LTE 700 MHz (B28)
LTE 800 MHz
LTE 850 MHz
LTE 900 MHz
LTE 1800 MHz
LTE 2100 MHz
LTE 2600 MHz
LTE-TDD 2300 MHz (B40)
LTE-TDD 2500 MHz (B41)
LTE-TDD 2600 MHz (B38)

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
EV-DO Rev. A
TD-SCDMA
TD-HSDPA
UMTS
EDGE
GPRS
HSPA+
LTE Cat 12
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 V10 (Android 9.0 Pie)Android 9.0 PieFuntouch 9.0 OS (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.

SoCQualcomm Snapdragon 665Qualcomm Snapdragon 665MediaTek Helio P65 (MT6768)
Process technology11 nm11 nm12 nm
CPU4x 2.0 GHz Kryo 260, 4x 1.8 GHz Kryo 2604x 2.0 GHz Kryo 260, 4x 1.8 GHz Kryo 2602x 2.0 GHz ARM Cortex-A75, 6x 1.95 GHz ARM Cortex-A55
CPU bits64 bit64 bit64 bit
Instruction setARMv8ARMv8ARMv8-A
CPU cores888
CPU frequency2000 MHz2000 MHz2000 MHz
GPUQualcomm Adreno 610Qualcomm Adreno 610ARM Mali-G52 MP2
GPU cores--2
GPU frequency--820 MHz
RAM capacity4 GB
6 GB
4 GB4 GB
RAM typeLPDDR4XLPDDR4XLPDDR4X
RAM channelsDouble channelDouble channelDouble channel
RAM frequency1866 MHz1866 MHz1800 MHz
-Game Turbo 2.0-

Storage

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

Storage64 GB
128 GB
64 GB
128 GB
128 GB
-UFS 2.1eMMC 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/technologyIPSAMOLEDSuper AMOLED
Diagonal size6.3 in
160.02 mm
16 cm
6.09 in
154.64 mm
15.46 cm
6.38 in
162.05 mm
16.21 cm
Width2.64 in
67.06 mm
6.71 cm
2.55 in
64.8 mm
6.48 cm
2.67 in
67.91 mm
6.79 cm
Height5.72 in
145.29 mm
14.53 cm
5.53 in
140.4 mm
14.04 cm
5.79 in
147.14 mm
14.71 cm
Aspect ratio2.167:12.167:12.167:1
Resolution1080 x 2340 pixels720 x 1560 pixels1080 x 2340 pixels
Pixel density409 ppi
160 ppcm
282 ppi
110 ppcm
404 ppi
158 ppcm
Color depth24 bit
16777216 colors
24 bit
16777216 colors
24 bit
16777216 colors
Display area82 %82.77 %83.53 %
Other featuresCapacitive
Scratch resistant
Capacitive
Multi-touch
Scratch resistant
Capacitive
Multi-touch
Scratch resistant
2.5D curved glass screen
Corning Gorilla Glass 5
TÜV Rheinland certification for low blue light emissions
1500:1 contrast ratio
84% NTSC
Corning Gorilla Glass 5
60000:1 contrast ratio
350 cd/m²
Peak brightness - 530 cd/m²
102.7% NTSC
HDR10
Corning Gorilla Glass 5
2.5D curved glass screen
Always-On Display

Sensors

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

SensorsProximity
Light
Accelerometer
Gyroscope
Fingerprint
Proximity
Light
Accelerometer
Compass
Gyroscope
Fingerprint
Proximity
Light
Accelerometer
Compass
Gyroscope
Fingerprint
-In-display fingerprint sensorIn-display fingerprint sensor

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 modelSamsung S5KGM2Sony IMX586 Exmor RSSony IMX499 Exmor RS
Sensor typeISOCELLCMOSCMOS
Sensor format1/2.25"1/2"1/2.8"
Pixel size0.8 µm
0.000800 mm
0.8 µm
0.000800 mm
1.12 µm
0.001120 mm
Aperturef/1.79f/1.79f/1.78
Focal length and 35 mm equivalent13 mm *(35 mm / full frame)4.71 mm-
Field of view79.4 °--
Number of lenses66-
Flash typeLEDDual LEDLED
Image resolution8000 x 6000 pixels
48 MP
8000 x 6000 pixels
48 MP
4608 x 3456 pixels
15.93 MP
Video resolution3840 x 2160 pixels
8.29 MP
3840 x 2160 pixels
8.29 MP
1920 x 1080 pixels
2.07 MP
Video FPS30 fps30 fps30 fps
FeaturesAutofocus
Digital zoom
Digital image stabilization
Geotagging
Panorama
HDR
Touch focus
Face detection
White balance settings
ISO settings
Exposure compensation
Self-timer
Scene mode
Macro 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)
Pixel size - 1.6 μm (4-in-1 pixel binning)
Sensor type - ISOCELL PLUS
Super Phase Detection
1080p @ 120 fps
720p @ 240 fps
Secondary rear camera - 8 MP (ultra-wide)
Sensor size - 1/4" (#2)
Pixel size - 1.12 μm (#2)
Aperture size - f/2.2 (#2)
Angle of view - 120° (#2)
Third rear camera - 2MP (depth-sensing)
Sensor size - 1/5" (#3)
Pixel size - 1.75 μm (#3)
Aperture size - f/2.4 (#3)
Fourth rear camera - 2MP (macro)
Sensor size - 1/5" (#4)
Pixel size - 1.75 μm (#4)
Aperture size - f/2.4 (#4)
Pixel size - 1.6 μm (4-in-1 pixel binning)
1080p @ 120 fps
720p @ 240 fps
Secondary rear camera - 8 MP (ultra-wide angle)
Pixel size - 1.12 μm (#2)
Aperture size - f/2.2 (#2)
Angle of view - 118° (#2)
Third rear camera - 2 MP
Pixel size - 1.75 μm (#3)
Aperture size - f/2.4 (#3)
Secondary rear camera - 8 MP (ultra-wide angle)
Aperture size - f/2.2 (#2)
Angle of view - 120° (#2)
Third rear camera - 2 MP
Aperture size - f/2.4 (#3)

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 modelOmniVision OV13855Samsung S5KGD1-
Sensor typePureCel--
Sensor size4.75 x 3.54 mm
0.23 in
--
Pixel size1.12 µm
0.001120 mm
0.8 µm
0.000800 mm
-
Crop factor7.31--
Aperturef/2f/2f/2
Focal length and 35 mm equivalent3.86 mm
28.21 mm *(35 mm / full frame)
3.85 mm-
Field of view-79 °-
Number of lenses-5-
Image resolution4224 x 3136 pixels
13.25 MP
6560 x 4920 pixels
32.28 MP
6528 x 4896 pixels
31.96 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
FeaturesFace unlockFace unlockFace unlock
-Sensor type - ISOCELL PLUS-

Audio

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

SpeakerLoudspeaker
Earpiece
Stereo speakers
Loudspeaker
Earpiece
Loudspeaker
Earpiece
Smart PA
Stereo speakers model - 1217SLS
Hi-Res Audio
Smart PA
-

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
BeiDou
GPS
A-GPS
GLONASS
BeiDou
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-Fi802.11a
802.11b
802.11g
802.11n
802.11n 5GHz
802.11ac
Dual band
Wi-Fi Hotspot
Wi-Fi Direct
Wi-Fi Display
802.11a
802.11b
802.11g
802.11n
802.11n 5GHz
802.11ac
Dual band
Wi-Fi Hotspot
Wi-Fi Direct
Wi-Fi Display
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.

Version5.05.05.0
FeaturesA2DP
EDR
HID
LE
A2DP
EDR
HID
LE
A2DP

USB

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

Connector typeUSB Type-CUSB Type-CMicro USB
Version2.02.02.0
FeaturesCharging
Mass storage
On-The-Go
Charging
Host
Mass storage
On-The-Go
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 jackYesYesYes

Connectivity

Information about other important connectivity technologies supported by the devices.

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

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+
AMR
AMR-WB
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
LDAC
AAC
AAC+
AMR
AMR-WB
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
AAC
AMR
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
DivX
H.263
H.264
H.265
MKV
MP4
VC-1
Xvid
3GPP
AVI
DivX
H.263
H.264
H.265
MKV
QuickTime
MP4
VC-1
WebM
WMV
Xvid
3GPP
AVI
H.263
H.264
MP4
WebM
Xvid

Battery

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

Capacity4000 mAh4030 mAh4500 mAh
TypeLi-IonLi-PolymerLi-Ion
Charger output power9 V / 2 A5 V / 2 A
9 V / 2 A
5 V / 2 A
9 V / 2 A
Quick charge technologyQualcomm Quick Charge 4.0Qualcomm Quick Charge 3.0-
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 (EU)0.191 W/kg0.301 W/kg-
Body SAR (EU)1.034 W/kg1.097 W/kg-
Head SAR (USA)0.374 W/kg1.03 W/kg-
Body SAR (USA)0.987 W/kg1.07 W/kg-

Additional features

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

Additional featuresM1908C3JG - SAR (Specific Absorption Rate) EU: head - 0.191 W/kg; body - 1.034 W/kg
M1908C3JG - SAR (Specific Absorption Rate) US: head - 0.374 W/kg; body - 0.987 W/kg
M1908C3JH - SAR (Specific Absorption Rate) EU: head - 0.191 W/kg; body - 1.089 W/kg
M1908C3JH - SAR (Specific Absorption Rate) US: head - 0.387 W/kg; body - 1.056 W/kg
Anti-splash coating
M1906F9SI - SAR (Specific Absorption Rate) India: head - 0.527 W/kg; body - 0.722 W/kg
P2i nano-coating
-
 Xiaomi Redmi Note 8Xiaomi Mi A3Vivo S1 Helio P65