Comparison between:
- Xiaomi Redmi S2
- Samsung Galaxy S7 SD820
- LG G2
- Apple iPhone 4S

Brand and model

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

Xiaomi Redmi S2Samsung Galaxy S7 SD820LG G2Apple iPhone 4S
Xiaomi Redmi S2
Prices
Samsung Galaxy S7 SD820LG G2
Prices
Apple iPhone 4S
Model alias-SM-G9300
G9300
SM-G9308
G9308
SM-G930A
G-930A
SM-G930P
G930P
SM-G930R4
G930R4
SM-G930V
G930V
Optimus G2
LG-D802
D802
LG-D802TA
D802TA
LG-D803
D803
LG-VS980
VS980
LG-LS980
LGLS980
LS980
A1431
A1387
A1387

Design

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

Width77.26 mm
7.726 cm
0.253 ft
3.042 in
69.6 mm
6.96 cm
0.228 ft
2.74 in
70.9 mm
7.09 cm
0.233 ft
2.791 in
58.6 mm
5.86 cm
0.192 ft
2.307 in
Height160.73 mm
16.073 cm
0.527 ft
6.328 in
142.4 mm
14.24 cm
0.467 ft
5.606 in
138.5 mm
13.85 cm
0.454 ft
5.453 in
115.2 mm
11.52 cm
0.378 ft
4.535 in
Thickness8.1 mm
0.81 cm
0.027 ft
0.319 in
7.9 mm
0.79 cm
0.026 ft
0.311 in
8.9 mm
0.89 cm
0.029 ft
0.35 in
9.3 mm
0.93 cm
0.031 ft
0.366 in
Weight170 g
0.37 lbs
6 oz
152 g
0.34 lbs
5.36 oz
143 g
0.32 lbs
5.04 oz
140 g
0.31 lbs
4.94 oz
Volume100.59 cm³
6.11 in³
78.3 cm³
4.75 in³
87.39 cm³
5.31 in³
62.78 cm³
3.81 in³
ColorsGold
Silver
Rose-gold
Black
Gold
Black
White
Red
Gold
-
Body materialsPlasticAluminium alloy
Glass
Polycarbonate-
Certification-IP68--

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-SIMMicro-SIMMicro-SIM
Number of SIM cards2111
FeaturesDual 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 (SM-G930R; SM-G930V)
CDMA 1900 MHz (SM-G930R; SM-G930V)
CDMA 800 MHz
CDMA 1900 MHz
CDMA 800 MHz
CDMA 1900 MHz
CDMA2000-1xEV-DO Rev. A (SM-G930R; SM-G930V)1xEV-DO Rev. A1xEV-DO Rev. A
TD-SCDMATD-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 1900 MHz
UMTS 2100 MHz
UMTS 900 MHz (SM-G930A; SM-G930V)
UMTS 1700/2100 MHz (SM-G930T)
UMTS 850 MHz
UMTS 900 MHz
UMTS 1900 MHz
UMTS 2100 MHz
UMTS 850 MHz
UMTS 900 MHz
UMTS 1900 MHz
UMTS 2100 MHz
LTELTE 850 MHz
LTE 900 MHz
LTE 1800 MHz
LTE 2100 MHz
LTE 2600 MHz
LTE-TDD 1900 MHz (B39)
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 850 MHz
LTE 1700/2100 MHz
LTE 1900 MHz
LTE 700 MHz Class 13 (SM-G930R; SM-G930T; SM-G930V)
LTE 700 MHz Class 17 (SM-G930R)
LTE 900 MHz (SM-G930A)
LTE 700 MHz (B12) (SM-G930A; SM-G930R; SM-G930T)
LTE 2100 MHz (SM-G930A; SM-G930T)
LTE 1800 MHz (SM-G930A; SM-G930T; SM-G930V)
LTE 2600 MHz (SM-G930A; SM-G930T; SM-G930V)
LTE 800 MHz (SM-G930A; SM-G930T; SM-G930V)
LTE 850 MHz
LTE 900 MHz
LTE 1800 MHz
LTE 2100 MHz
LTE 2600 MHz
LTE-TDD 2300 MHz (B40)
-

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
EV-DO Rev. A
TD-SCDMA
TD-HSDPA
UMTS
EDGE
GPRS
HSPA+
LTE Cat 9
EV-DO Rev. A
UMTS
EDGE Class 12
GPRS Class 12
HSPA+
LTE Cat 4
EV-DO Rev. A
UMTS
EDGE
GPRS
HSPA
EV-DO Rev. A

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 V9.5 (Android 8.1 Oreo)
MIUI (Android 9.0 Pie)
Android 6.0.1 Marshmallow
Android 7.0 Nougat
Android 8.0 Oreo
Android 4.2.2 Jelly Bean
Android 4.4 KitKat
Android 5.0 Lollipop
Android 5.1.1 Lollipop
iOS 5
iOS 6.1.3
iOS 7.0.4
iOS 8.0.2
User interface (UI)-TouchWiz--

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 625 MSM8953Qualcomm Snapdragon 820 MSM8996Qualcomm Snapdragon 800 MSM8974AAApple A5 APL0498
Process technology14 nm14 nm28 nm45 nm
CPUARM Cortex-A532x 2.15 GHz Kryo, 2x 1.6 GHz KryoKrait 400ARM Cortex-A9
CPU bits64 bit64 bit32 bit32 bit
Instruction setARMv8ARMv8-AARMv7ARMv7
Level 0 cache memory (L0)--4 KB + 4 KB-
Level 1 cache memory (L1)-32 KB + 32 KB16 KB + 16 KB32 KB + 32 KB
Level 2 cache memory (L2)-1536 KB
1.5 MB
2048 KB
2 MB
1024 KB
1 MB
CPU cores8442
CPU frequency2000 MHz2150 MHz2260 MHz800 MHz
GPUQualcomm Adreno 506Qualcomm Adreno 530Qualcomm Adreno 330PowerVR SGX543 MP2
GPU cores--42
GPU frequency650 MHz624 MHz450 MHz-
RAM capacity3 GB
4 GB
4 GB2 GB512 MB
RAM typeLPDDR3LPDDR4LPDDR3LPDDR2
RAM channelsSingle channelDouble channelDouble channelDouble channel
RAM frequency933 MHz1866 MHz800 MHz400 MHz

Storage

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

Storage32 GB
64 GB
32 GB
64 GB
16 GB
32 GB
8 GB
16 GB
32 GB
64 GB
-UFS 2.0--

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/technologyIPSSuper AMOLEDIPSIPS
Diagonal size5.99 in
152.15 mm
15.21 cm
5.1 in
129.54 mm
12.95 cm
5.2 in
132.08 mm
13.21 cm
3.5 in
88.9 mm
8.89 cm
Width2.68 in
68.04 mm
6.8 cm
2.5 in
63.51 mm
6.35 cm
2.55 in
64.75 mm
6.48 cm
1.94 in
49.31 mm
4.93 cm
Height5.36 in
136.08 mm
13.61 cm
4.45 in
112.9 mm
11.29 cm
4.53 in
115.12 mm
11.51 cm
2.91 in
73.97 mm
7.4 cm
Aspect ratio2:1
2:1 (18:9)
1.778:1
16:9
1.778:1
16:9
1.5:1
3:2
Resolution720 x 1440 pixels1440 x 2560 pixels1080 x 1920 pixels640 x 960 pixels
Pixel density269 ppi
105 ppcm
576 ppi
226 ppcm
424 ppi
166 ppcm
330 ppi
129 ppcm
Color depth24 bit
16777216 colors
24 bit
16777216 colors
24 bit
16777216 colors
24 bit
16777216 colors
Display area74.8 %72.58 %76.16 %54.21 %
Other featuresCapacitive
Multi-touch
Capacitive
Multi-touch
Scratch resistant
Capacitive
Multi-touch
Scratch resistant
Capacitive
Multi-touch
Scratch resistant
1000:1 contrast ratio
450 cd/m²
70.8 % NTSC
Corning Gorilla Glass 4
2.5D curved glass screen
Corning Gorilla Glass 2Corning Gorilla Glass
LED-backlit
Oleophobic (lipophobic) coating

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
Barometer
Fingerprint
Hall
Heart rate
Proximity
Light
Accelerometer
Compass
Gyroscope
Proximity
Light
Accelerometer
Compass
Gyroscope
Fingerprint sensor model - Fingerprint Cards FPC1028---

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 IMX486 Exmor RSSony IMX260 Exmor RSSony IMX135 Exmor RSSony IMX145 Exmor RS
Sensor typeCMOSCMOSCMOSCMOS
Sensor size--4.69 x 3.52 mm
0.23 in
4.54 x 3.42 mm
0.22 in
Sensor format1/2.9"---
Pixel size1.25 µm
0.001250 mm
1.4 µm
0.001400 mm
1.127 µm
0.001127 mm
1.391 µm
0.001391 mm
Crop factor--7.387.61
ISO100 - 3200-100 - 80064 - 800
Aperturef/2.2f/1.7f/2.4f/2.4
Shutter speed---1/15 - 1/30000
Focal length and 35 mm equivalent3.84 mm4.2 mm4 mm
29.51 mm *(35 mm / full frame)
4.28 mm
32.58 mm *(35 mm / full frame)
Number of lenses5---
Flash typeLEDLEDLEDLED
Image resolution4000 x 3000 pixels
12 MP
4032 x 3024 pixels
12.19 MP
4160 x 3120 pixels
12.98 MP
3264 x 2448 pixels
7.99 MP
Video resolution1920 x 1080 pixels
2.07 MP
3840 x 2160 pixels
8.29 MP
1920 x 1080 pixels
2.07 MP
1920 x 1080 pixels
2.07 MP
Video FPS30 fps30 fps60 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
Optical image stabilization
Geotagging
Panorama
HDR
Touch focus
Face detection
White balance settings
ISO settings
Exposure compensation
Self-timer
Scene mode
Macro mode
RAW
Phase detection autofocus (PDAF)
Autofocus
Continuous shooting
Digital zoom
Optical image stabilization
Geotagging
Panorama
HDR
Touch focus
Face detection
White balance settings
ISO settings
Exposure compensation
Self-timer
Scene mode
Autofocus
Digital image stabilization
Geotagging
Touch focus
Face detection
Secondary rear camera - 5 MP
Sensor model - Samsung S5K5E8 (#2)
Sensor type - CMOS BSI (#2)
Sensor size - 2.9 x 2.15 mm (#2)
Pixel size - 1.12 μm (#2)
Available also with Samsung S5K2L1 (ISOCELL)
Phase detection with Dual Pixel
Object tracking AF
Smart OIS
1080p @ 60 fps
720p @ 120 fps
1920x1080 @ 60 fps
Sapphire Crystal Glass
-

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 S5K3P8SPSamsung S5K4E6--
Sensor typeISOCELLISOCELL--
Sensor size-3.2 x 2.4 mm
0.16 in
--
Sensor format1/3.1"---
Pixel size1 µm
0.001000 mm
1.25 µm
0.001250 mm
--
Crop factor-10.82--
Aperturef/2f/1.7--
Focal length and 35 mm equivalent3.52 mm2.1 mm
22.71 mm *(35 mm / full frame)
--
Auxiliary lightLED---
Image resolution4608 x 3456 pixels
15.93 MP
2560 x 1440 pixels
3.69 MP
1920 x 1080 pixels
2.07 MP
640 x 480 pixels
0.31 MP
Video resolution1920 x 1080 pixels
2.07 MP
1920 x 1080 pixels
2.07 MP
1920 x 1080 pixels
2.07 MP
640 x 480 pixels
0.31 MP
Video FPS30 fps30 fps30 fps30 fps
FeaturesFace unlock---
-Auto HDR--

Audio

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

SpeakerLoudspeaker
Earpiece
Loudspeaker
Earpiece
Loudspeaker
Earpiece
Loudspeaker
Earpiece
-Qualcomm WCD9335 DAC192 kHz / 24-bit-

Radio

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

RadioYesNoYesNo
--RDS
Not available in VS980
-

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
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
802.11a
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
802.11b
802.11g
802.11n
Wi-Fi Hotspot
-2x2 MiMO--

Bluetooth

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

Version4.24.24.04.0
FeaturesA2DP
HID
A2DP
AVRCP
DIP
HFP
HID
HSP
LE
MAP
OPP
PAN
PBAP
A2DP
AVRCP
FTP
HFP
HID
LE
OPP
PBAP
A2DP
AVCTP
AVDTP
AVRCP
BNEP
GAVDP
HFP
HID
PAN
PBAP
SPP

USB

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

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

HDMI

The High-Definition Multimedia Interface (HDMI) is considered to be the digital alternative of the analog audio/video interface standards.

HDMI--Micro USB to HDMI MHL adapter-

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
Infrared
Tethering
VoLTE
Computer sync
OTA sync
Tethering
NFC
Computer sync
OTA sync
Infrared
Tethering
DLNA
NFC
Computer sync
OTA sync
Tethering
TV-Out

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
HTML
HTML5

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
AAC+
AMR
AMR-WB
aptX
eAAC+
FLAC
M4A
MIDI
MP3
OGG
WMA
WAV
XMF
AC3
eAAC+
FLAC
MP3
WMA
WAV
AAC
eAAC+
M4A
MP3
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
3GPP2
AVI
DivX
Flash Video
H.263
H.264
MKV
MP4
WebM
WMV
Xvid
ASF
DivX
H.263
H.264
MP4
MPEG-4
WMV
Xvid
H.264
QuickTime
MPEG-4

Battery

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

Capacity3080 mAh3000 mAh3000 mAh1432 mAh
TypeLi-PolymerLi-IonLi-PolymerLi-Polymer
2G talk time--16 h 30 min
16.5 h
990 min
0.7 days
14 h
840 min
0.6 days
2G stand-by time--790 h
47400 min
32.9 days
200 h
12000 min
8.3 days
3G talk time--17 h 30 min
17.5 h
1050 min
0.7 days
8 h
480 min
0.3 days
3G stand-by time--900 h
54000 min
37.5 days
200 h
12000 min
8.3 days
Charger output power5 V / 2 A5 V / 2 A
9 V / 1.67 A
--
Quick charge technology-Qualcomm Quick Charge 2.0--
FeaturesNon-removableWireless charging
Fast charging
Non-removable
Non-removableNon-removable
-Qi/PMA wireless chargingSiO+-

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)0.429 W/kg-0.41 W/kg0.99 W/kg
Body SAR (EU)1.577 W/kg-0.47 W/kg0.99 W/kg
Head SAR (USA)0.89 W/kg1.24 W/kg0.5 W/kg1.18 W/kg
Body SAR (USA)1.43 W/kg1.59 W/kg0.69 W/kg1.19 W/kg

Additional features

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

Additional features-SM-G930A - SAR (Specific Absorption Rate) US: head - 1.240 W/kg; body - 1.590 W/kg
SM-G930P - SAR (Specific Absorption Rate) US: head - 1.240 W/kg; body - 1.590 W/kg
SM-G930V - SAR (Specific Absorption Rate) US: head - 1.240 W/kg; body - 1.590 W/kg
--
 Xiaomi Redmi S2Samsung Galaxy S7 SD820LG G2Apple iPhone 4S