Comparison between:
- Samsung Galaxy M51
- POCO X2

Brand and model

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

Samsung Galaxy M51POCO X2
Samsung Galaxy M51
Prices
POCO X2
Prices
Model aliasSM-M515F
SM-M515F/DSN
MZB8744IN

Design

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

Width76.3 mm
7.63 cm
0.25 ft
3.004 in
76.6 mm
7.66 cm
0.251 ft
3.016 in
Height163.9 mm
16.39 cm
0.538 ft
6.453 in
165.3 mm
16.53 cm
0.542 ft
6.508 in
Thickness9.5 mm
0.95 cm
0.031 ft
0.374 in
8.79 mm
0.879 cm
0.029 ft
0.346 in
Weight213 g
0.47 lbs
7.51 oz
208 g
0.46 lbs
7.34 oz
Volume118.8 cm³
7.21 in³
111.3 cm³
6.76 in³
ColorsElectric Blue
Celestial White
Atlantis Blue
Body materialsPlasticPlastic
Glass

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-SIM
Nano-SIM / microSD
Number of SIM cards22
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 (B5)
GSM 900 MHz (B8)
GSM 1800 MHz (B3)
GSM 1900 MHz (B2)
W-CDMA-W-CDMA 850 MHz (B5)
W-CDMA 900 MHz (B8)
W-CDMA 1900 MHz (B2)
W-CDMA 2100 MHz (B1)
UMTSUMTS 850 MHz (B5)
UMTS 900 MHz (B8)
UMTS 1900 MHz (B2)
UMTS 2100 MHz (B1)
-
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-FDD 850 MHz (B5)
LTE-FDD 900 MHz (B8)
LTE-FDD 1800 MHz (B3)
LTE-FDD 2100 MHz (B1)
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 6
EDGE
GPRS
HSPA+
LTE
TD-SCDMA

Operating system

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

Operating system (OS)Android 10MIUI 11 (Android 10)
User interface (UI)One UI Core-

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 730Qualcomm Snapdragon 730G
Process technology8 nm8 nm
CPU2x 2.2 GHz Kryo 470, 6x 1.8 GHz Kryo 4702x 2.2 GHz Kryo 470, 6x 1.8 GHz Kryo 470
CPU bits64 bit64 bit
Instruction setARMv8ARMv8
CPU cores88
CPU frequency2200 MHz2200 MHz
GPUQualcomm Adreno 618Qualcomm Adreno 618
RAM capacity6 GB6 GB
8 GB
RAM typeLPDDR4XLPDDR4X
RAM channelsDouble channelDouble channel
RAM frequency-1866 MHz
-Liquid cooling

Storage

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

Storage128 GB64 GB
128 GB
-UFS 2.1

Memory cards

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

TypesmicroSD
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/technologySuper AMOLEDIPS
Diagonal size6.7 in
170.18 mm
17.02 cm
6.67 in
169.42 mm
16.94 cm
Width2.81 in
71.32 mm
7.13 cm
2.74 in
69.52 mm
6.95 cm
Height6.08 in
154.52 mm
15.45 cm
6.08 in
154.5 mm
15.45 cm
Aspect ratio2.167:12.222:1
Resolution1080 x 2340 pixels1080 x 2400 pixels
Pixel density385 ppi
151 ppcm
395 ppi
155 ppcm
Color depth24 bit
16777216 colors
24 bit
16777216 colors
Display area88.4 %85.1 %
Other featuresCapacitive
Multi-touch
Scratch resistant
Capacitive
Multi-touch
Scratch resistant
2.5D curved glass screen
Gorilla Glass 3
Corning Gorilla Glass 5
2.5D curved glass screen
Oleophobic coating
120Hz
HDR10

Sensors

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

SensorsProximity
Light
Accelerometer
Compass
Gyroscope
Fingerprint
Proximity
Light
Accelerometer
Compass
Gyroscope
Pedometer
Geomagnetic
Fingerprint
Gravity
Side-mounted fingerprint sensorSide-mounted 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 modelSony IMX682Sony IMX686
Sensor typeCMOS BSICMOS BSI
Sensor format1/1.72"1/1.7"
Pixel size0.8 µm
0.000800 mm
0.8 µm
0.000800 mm
ISO100 - 800-
Aperturef/1.8f/1.7
Focal length and 35 mm equivalent3.58 mm
27 mm *(35 mm / full frame)
-
Field of view-79 °
Number of lenses6-
Flash typeLEDDual LED
Image resolution9280 x 6944 pixels
64.44 MP
9248 x 6944 pixels
64.22 MP
Video resolution3840 x 2160 pixels
8.29 MP
3840 x 2160 pixels
8.29 MP
Video 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
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)
Pixel size - 1.6 μm (4-in-1 pixel binning)
Sensor type - ISOCELL PLUS
Super Phase Detection
Secondary rear camera - 12 MP (ultra-wide angle)
Aperture size - f/2.2 (#2)
Pixel size - 1.12 μm (#2)
Angle of view - 123° (#2)
Third rear camera - 5 MP (macro)
Aperture size - f/2.4 (#3)
Fourth rear camera - 5 MP (depth-sensing)
Aperture size - f/2.4 (#3)
Pixel size - 1.12 μm (#3)
Pixel size - 1.6 μm (4-in-1 pixel binning)
10x digital zoom
1080p @ 120 fps
720p @ 960 fps
Secondary rear camera - 8 MP (ultra-wide angle)
Angle of view - 120° (#2)
Pixel size - 1.12 μm (#2)
Aperture size - f/2.2 (#2)
Third rear camera - 2 MP (depth-sensing)
Pixel size - 1.75 μm (#3)
Aperture size - f/2.4 (#3)
Fourth rear camera - 2 MP (macro)
Macro shooting distance - 2 cm (#4)
Pixel size - 1.75 μm (#4)
Aperture size - f/2.4 (#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.

Sensor modelSamsung S5KGD1-
Sensor typeISOCELL-
Sensor format1/2.8"-
Pixel size0.8 µm
0.000800 mm
0.8 µm
0.000800 mm
Aperturef/2.2-
Focal length and 35 mm equivalent26 mm *(35 mm / full frame)-
Field of view-78 °
Image resolution6560 x 4928 pixels
32.33 MP
5963 x 3354 pixels
20 MP
Video resolution1920 x 1080 pixels
2.07 MP
1920 x 1080 pixels
2.07 MP
Video FPS30 fps30 fps
FeaturesFace unlock-
Sensor type - ISOCELL SlimSecondary front camera - 2 MP (depth-sensing)
Angle of view - 83° (#2)
Pixel size - 1.75 μm (#2)
Aperture size - f/2.4 (#2)

Audio

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

SpeakerLoudspeaker
Earpiece
Loudspeaker
Earpiece
-1217 super linear speaker
Smart PA
Hi-Res audio
Dual microphone noise cancellation

Radio

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

RadioYesYes

Tracking/Positioning

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

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

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
VHT80-

Bluetooth

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

Version5.05.0
FeaturesA2DP
AVRCP
DIP
HFP
HID
HSP
MAP
OPP
PAN
PBAP
HOGP
A2DP
LE

USB

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

Connector typeUSB Type-CUSB Type-C
Version2.02.0
FeaturesCharging
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 jackYesYes

Connectivity

Information about other important connectivity technologies supported by the devices.

ConnectivityComputer sync
OTA sync
Tethering
NFC
VoLTE
ANT+
Computer sync
Tethering
NFC
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

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
AMR-WB
eAAC+
FLAC
M4A
MIDI
MP3
OGG
WMA
WAV
AAC
AAC+
AMR
AMR-WB
aptX
aptX HD
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
3GPP2
AVI
Flash Video
H.263
H.264
H.265
MKV
MP4
VC-1
VP8
VP9
WebM
WMV
WMV7
WMV8
Xvid
3GPP
AVI
DivX
Flash Video
H.263
H.264
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.

Capacity7000 mAh4500 mAh
TypeLi-IonLi-Polymer
Charger output power5 V / 5 A9 V / 3 A
FeaturesFast 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)0.609 W/kg-
Body SAR (EU)1.446 W/kg-

Additional features

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

Additional features-SAR (Specific Absorption Rate) India: head - 1.080 W/kg; body - 0.620 W/kg
 Samsung Galaxy M51POCO X2