Comparison between:
- Apple iPhone 6
- Apple iPhone 6s
- Apple iPhone 8

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

	Apple iPhone 6	Apple iPhone 6s	Apple iPhone 8

Model alias	A1549 A1586 A1589	A1634 A1688 A1690 A1699	A1863 A1905 A1906

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

Width	67 mm 6.7 cm 0.22 ft 2.638 in	67.1 mm 6.71 cm 0.22 ft 2.642 in	67.3 mm 6.73 cm 0.221 ft 2.65 in
Height	138.1 mm 13.81 cm 0.453 ft 5.437 in	138.3 mm 13.83 cm 0.454 ft 5.445 in	138.4 mm 13.84 cm 0.454 ft 5.449 in
Thickness	6.9 mm 0.69 cm 0.023 ft 0.272 in	7.1 mm 0.71 cm 0.023 ft 0.28 in	7.3 mm 0.73 cm 0.024 ft 0.287 in
Weight	129 g 0.28 lbs 4.55 oz	143 g 0.32 lbs 5.04 oz	148 g 0.33 lbs 5.22 oz
Volume	63.84 cm³ 3.88 in³	65.89 cm³ 4 in³	67.99 cm³ 4.13 in³
Colors	Gold Gray Silver	Gray Silver Gold Rose-gold	Silver Gold Gray
Body materials	Aluminium alloy Glass	Aluminium alloy	Aluminium alloy Glass
Certification	-	-	IP67

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

SIM card type	Nano-SIM	Nano-SIM	Nano-SIM
Number of SIM cards	1	1	1

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

GSM	GSМ 850 МНz GSМ 900 МНz GSМ 1900 МНz	GSМ 850 МНz GSМ 900 МНz GSМ 1900 МНz	GSМ 850 МНz GSМ 900 МНz GSМ 1900 МНz
CDMA	CDMA 800 MHz (A1549) CDMA 1700/2100 MHz (A1549) CDMA 1900 MHz (A1549)	CDMA 800 MHz CDMA 1700/2100 MHz CDMA 1900 MHz	CDMA 800 MHz CDMA 1700/2100 MHz CDMA 1900 MHz
CDMA2000	1xEV-DO Rev. A (A1549) 1xEV-DO Rev. B (A1549)	1xEV-DO Rev. A	1xEV-DO Rev. A
TD-SCDMA	TD-SCDMA 1900 MHz (A1586) TD-SCDMA 2000 MHz (A1586)	-	TD-SCDMA 1900 MHz TD-SCDMA 2000 MHz
UMTS	UМТS 900 МНz UМТS 1700/2100 МНz UМТS 1900 МНz UМТS 2100 МНz	UМТS 900 МНz UМТS 1700/2100 МНz UМТS 1900 МНz UМТS 2100 МНz	UМТS 900 МНz UМТS 1700/2100 МНz UМТS 1900 МНz UМТS 2100 МНz
LTE	LТЕ 700 МНz Сlаss 13 LТЕ 700 МНz Сlаss 17 LТЕ 800 МНz LТЕ 850 МНz LТЕ 900 МНz LТЕ 1800 МНz LТЕ 1900 МНz LТЕ 2100 МНz LТЕ 2600 МНz LТЕ-ТDD 2600 МНz (В38) (А1586) LТЕ-ТDD 1900 МНz (В39) (А1586) LТЕ-ТDD 2500 МНz (В41) (А1586)	LТЕ-ТDD 1900 МНz (В39) LТЕ-ТDD 2300 МНz (В40) LТЕ-ТDD 2500 МНz (В41) LТЕ-ТDD 2600 МНz (В38) LТЕ 700 МНz Сlаss 13 LТЕ 700 МНz Сlаss 17 LТЕ 800 МНz LТЕ 850 МНz LТЕ 900 МНz LТЕ 1800 МНz LТЕ 1900 МНz LТЕ 2100 МНz LТЕ 2600 МНz LТЕ АWS (В4) LТЕ 700 МНz (В12) LТЕ 800 МНz (В18) LТЕ 800 МНz (В19) LТЕ 800 МНz (В20) LТЕ 1900+ МНz (В25) LТЕ 800 МНz (В26) LТЕ 800 МНz SМR (В27) LТЕ 700 МНz АРТ (В28) LТЕ 2300 МНz (В30)	LТЕ-ТDD 1900 МНz (В39) LТЕ-ТDD 2300 МНz (В40) LТЕ-ТDD 2500 МНz (В41) LТЕ-ТDD 2600 МНz (В38) LТЕ 700 МНz Сlаss 13 LТЕ 700 МНz Сlаss 17 LТЕ 800 МНz LТЕ 850 МНz LТЕ 900 МНz LТЕ 1700/2100 МНz LТЕ 1800 МНz LТЕ 1900 МНz LТЕ 2100 МНz LТЕ 2600 МНz LТЕ АWS (В4) LТЕ 700 МНz (В12) LТЕ 800 МНz (В18) LТЕ 800 МНz (В19) LТЕ 800 МНz (В20) LТЕ 1900+ МНz (В25) LТЕ 800 МНz (В26) LТЕ 800 МНz SМR (В27) LТЕ 700 МНz АРТ (В28) LТЕ 2300 МНz (В30)

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

Mobile network technologies

UМТS
GРRS
LТЕ Саt 4

UМТS
GРRS
LТЕ Саt 6

UМТS
GРRS
LТЕ Саt 16
ЕV-DО Rеv. А

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

Operating system (OS)

iОS 8
iОS 9
iОS 12.3
iОS 14.4.1

iОS 9
iОS 10
iОS 11.4
iОS 12.3
ΙОS 13.5.1
iОS 15

iОS 11

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

SoC	Аррlе А8 АРL1011	Аррlе А9 АРL0898	Аррlе А11 Вiоniс АРL1W72
Process technology	20 nm	14 nm	10 nm
CPU	Аррlе Сyсlоnе	Аррlе Тwistеr	2х Моnsооn, 4х Мistrаl
CPU bits	32 bit	64 bit	64 bit
Instruction set	ARMv7	ARMv8-A	ARMv8-A
Level 1 cache memory (L1)	16 KB + 16 KB	16 KB + 16 KB	16 KB + 16 KB
Level 2 cache memory (L2)	1024 KB 1 MB	3072 KB 3 MB	8192 KB 8 MB
Level 3 cache memory (L3)	4096 KB 4 MB	8192 KB 8 MB	-
CPU cores	2	2	6
CPU frequency	1400 MHz	1840 MHz	2100 MHz
GPU	PowerVR GX6450	PowerVR GT7600	-
GPU cores	4	6	3
RAM capacity	1 GB	2 GB	2 GB
RAM type	LPDDR4	LPDDR4	LPDDR4
	M8 motion coprocessor	M9 motion coprocessor Samsung N71AP - 14 nm TSMC N71mAP - 16 nm	M11 motion coprocessor Neural engine

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

Storage	16 GB 32 GB 64 GB 128 GB	16 GB 64 GB 128 GB	64 GB 128 GB 256 GB
	UFS 2.1	UFS 2.1	eMMC 5.1

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

Type/technology	IPS	IPS	IPS
Diagonal size	4.7 in 119.38 mm 11.94 cm	4.7 in 119.38 mm 11.94 cm	4.7 in 119.38 mm 11.94 cm
Width	1.93 in 48.99 mm 4.9 cm	2.25 in 57.08 mm 5.71 cm	2.01 in 51.1 mm 5.11 cm
Height	4.29 in 108.87 mm 10.89 cm	4.13 in 104.85 mm 10.48 cm	4.25 in 107.89 mm 10.79 cm
Aspect ratio	2.222:1	1.837:1	2.111:1
Resolution	1080 x 2400 pixels	1176 x 2160 pixels	720 x 1520 pixels
Pixel density	560 ppi 220 ppcm	523 ppi 205 ppcm	358 ppi 140 ppcm
Color depth	24 bit 16777216 colors	24 bit 16777216 colors	24 bit 16777216 colors
Display area	57.83 %	64.7 %	59.39 %
Other features	Capacitive Multi-touch Scratch resistant	Capacitive Multi-touch Scratch resistant	Capacitive Multi-touch Scratch resistant
	Retina HD display 1400:1 contrast ratio 500 cd/m² Oleophobic (lipophobic) coating LED-backlit	Retina HD display Force Touch 1400:1 contrast ratio 500 cd/m² Full sRGB standard Oleophobic (lipophobic) coating LED-backlit	Ion-strengthtened glass Retina HD display Force Touch 1400:1 contrast ratio 625 cd/m² Oleophobic (lipophobic) coating LED-backlit Wide Color display (P3)

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

Sensors

Proximity
Light
Accelerometer
Compass
Gyroscope
Barometer

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

Sensor model	Sony Exmor RS	Sony IMX315 Exmor RS	Sony Exmor RS
Sensor type	CMOS BSI	CMOS	CMOS
Sensor size	4.8 x 3.6 mm 0.24 in	4.8 x 3.6 mm 0.24 in	-
Sensor format	-	-	1/3"
Pixel size	1.471 µm 0.001471 mm	1.19 µm 0.001190 mm	1.22 µm 0.001220 mm
Crop factor	7.21	7.21	-
ISO	32 - 2000	-	-
Aperture	f/2.2	f/2.2	f/1.8
Focal length and 35 mm equivalent	4.15 mm 29.89 mm ^{*(35 mm / full frame)}	4.02 mm 29 mm ^{*(35 mm / full frame)}	3.99 mm 28 mm ^{*(35 mm / full frame)}
Number of lenses	5	5	6
Flash type	Dual LED	Dual LED	Quad LED
Image resolution	3264 x 2448 pixels 7.99 MP	4032 x 3024 pixels 12.19 MP	4032 x 3024 pixels 12.19 MP
Video resolution	1920 x 1080 pixels 2.07 MP	3840 x 2160 pixels 8.29 MP	3840 x 2160 pixels 8.29 MP
Video FPS	60 fps	30 fps	60 fps
Features	Autofocus Continuous shooting Digital zoom Digital image stabilization Geotagging Panorama HDR Touch focus Face detection Exposure compensation Self-timer Phase detection autofocus (PDAF)	Autofocus Continuous shooting Digital zoom Digital image stabilization Geotagging Panorama HDR Touch focus Face detection Exposure compensation Self-timer	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 Macro mode RAW
	Largan Precision Optics IR filter Sapphire crystal glass lens cover 720p @ 240 fps	Sensor type - RGBW Hybrid IR filter Sapphire crystal glass lens cover 1080p @ 60 fps 720p @ 240 fps	Hybrid IR filter Noise reduction Sapphire crystal glass lens cover 1080p @ 240 fps

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 type	CMOS	CMOS	CMOS BSI
Pixel size	-	-	1 µm 0.001000 mm
Aperture	f/2.2	f/2.2	f/2.2
Focal length and 35 mm equivalent	-	31 mm	2.87 mm 32 mm ^{*(35 mm / full frame)}
Image resolution	1280 x 960 pixels 1.23 MP	2560 x 1920 pixels 4.92 MP	3472 x 2063 pixels 7.16 MP
Video resolution	1280 x 720 pixels 0.92 MP	1920 x 1080 pixels 2.07 MP	1920 x 1080 pixels 2.07 MP
Video FPS	30 fps	30 fps	30 fps
Features	Face unlock	Face unlock	-
	HDR Continuous shooting Exposure compensation	Retina flash HDR Exposure compensation Self-timer	720p @ 240 fps

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

Speaker	Loudspeaker Earpiece Stereo speakers	Loudspeaker Earpiece	Loudspeaker Earpiece Stereo speakers
	HAC (M3/T4) - Hearing Aid Compatibility	Cirrus Logic 338S00105 Cirrus Logic 338S1285 HAC (M3/T4) - Hearing Aid Compatibility	Dolby Digital Plus HAC (M3/T4) - Hearing Aid Comaptibility

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

Radio

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

Tracking/Positioning

GРS
А-GРS
GLОΝАSS

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

Wi-Fi	802.11а 802.11b 802.11g 802.11а 802.11ас 5GНz	802.11а 802.11b 802.11g 802.11а 802.11ас 5GНz	802.11а 802.11b 802.11g Wi-Fi Disрlаy 802.11а 802.11ас 5GНz
	-	MiMO	MiMO

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

Version	4.1	4.2	5.0
Features	A2DP LE	A2DP LE	A2DP LE

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

Version	2.0	-	-
Features	Charging Mass storage Proprietary	Charging Mass storage Proprietary	Charging Mass storage Proprietary
	-	Lightning connector	Lightning connector

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 jack

Yes

Information about other important connectivity technologies supported by the devices.

Connectivity

Computer sync
OTA sync
Tethering
TV-Out
NFC
UMA
VoLTE

Computer sync
OTA sync
Tethering
NFC
VoLTE

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

Browser

HTML
HTML5
CSS 3

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

Audio file formats/codecs

AAC
eAAC+
M4A
MP3
WAV
Apple Lossless
AAX+
AAX

AAC
AAC+
AMR
AMR-WB
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
AIFF

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

Video file formats/codecs

3GPP
H.263
H.264
H.265
QuickTime
MPEG-4

3GPP
AVI
H.263
H.264
QuickTime
MPEG-4

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

Capacity	1810 mAh	1715 mAh	1821 mAh
Type	Li-Polymer	Li-Polymer	Li-Ion
2G talk time	14 h 840 min 0.6 days	-	12 h 720 min 0.5 days
2G stand-by time	250 h 15000 min 10.4 days	-	-
3G talk time	14 h 840 min 0.6 days	14 h 840 min 0.6 days	12 h 720 min 0.5 days
3G stand-by time	250 h 15000 min 10.4 days	240 h 14400 min 10 days	-
Charger output power	-	-	5 V / 1 A
Features	Non-removable	Non-removable	Wireless charging Fast charging Non-removable
	-	-	Qi wireless charging

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)	0.68 W/kg	0.6 W/kg	1.69 W/kg
Body SAR (EU)	0.7 W/kg	0.59 W/kg	1.67 W/kg
Head SAR (USA)	0.77 W/kg	0.69 W/kg	1.49 W/kg
Body SAR (USA)	0.91 W/kg	0.77 W/kg	1.4 W/kg

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

Additional features

A1863 - SAR (Specific Absorption Rate) EU: head - 1.350 W/kg; body - 1.360 W/kg
A1863 - SAR (Specific Absorption Rate) US: head - 1.300 W/kg; body - 1.130 W/kg
A1905 - SAR (Specific Absorption Rate) EU: head - 1.320 W/kg; body - 1.360 W/kg
A1905 - SAR (Specific Absorption Rate) US: head - 1.190 W/kg; body - 1.170 W/kg
A1906 - SAR (Specific Absorption Rate) EU: head - 1.360 W/kg; body - 1.360 W/kg
A1906 - SAR (Specific Absorption Rate) US: head - 1.170 W/kg; body - 1.140 W/kg

Apple iPhone 6

Apple iPhone 6s

Apple iPhone 8

Xiaomi Redmi A3 Pro

Xiaomi Mi MIX

Xiaomi Redmi 2A

Xiaomi Mi 1s

Xiaomi Black Shark 5