Comparison between:
- Xiaomi Mi A2
- Ulefone Armor 8 Pro
- Ulefone Armor 8

Brand and model

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

Xiaomi Mi A2Ulefone Armor 8 ProUlefone Armor 8
Xiaomi Mi A2
Prices
Ulefone Armor 8 Pro
Prices
Ulefone Armor 8
Prices
Model alias-Armor8 ProArmor8

Design

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

Width75.4 mm
7.54 cm
0.247 ft
2.969 in
81.8 mm
8.18 cm
0.268 ft
3.22 in
81.8 mm
8.18 cm
0.268 ft
3.22 in
Height158.7 mm
15.87 cm
0.521 ft
6.248 in
166 mm
16.6 cm
0.545 ft
6.535 in
166 mm
16.6 cm
0.545 ft
6.535 in
Thickness7.3 mm
0.73 cm
0.024 ft
0.287 in
15 mm
1.5 cm
0.049 ft
0.591 in
15 mm
1.5 cm
0.049 ft
0.591 in
Weight168 g
0.37 lbs
5.93 oz
282 g
0.62 lbs
9.95 oz
282 g
0.62 lbs
9.95 oz
Volume87.35 cm³
5.3 in³
203.68 cm³
12.37 in³
203.68 cm³
12.37 in³
ColorsBlack
Blue
Gold
Black
Orange
Red
Black
Orange
Red
Body materialsAluminium alloyPolycarbonate
Metal
Rubber
Polycarbonate
Metal
Rubber
Certification-IP68
IP69K
MIL-STD-810G
IP68
IP69K
MIL-STD-810G

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
Nano-SIM
Nano-SIM / microSD
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)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 (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)
CDMA-CDMA 800 MHz (BC0)
CDMA 1900 MHz (BC1)
CDMA 800 MHz (BC0)
CDMA 1900 MHz (BC1)
W-CDMA-W-CDMA 850 MHz (B5)
W-CDMA 900 MHz (B8)
W-CDMA 1700 MHz (B4)
W-CDMA 1900 MHz (B2)
W-CDMA 2100 MHz (B1)
W-CDMA 850 MHz (B5)
W-CDMA 900 MHz (B8)
W-CDMA 1700 MHz (B4)
W-CDMA 1900 MHz (B2)
W-CDMA 2100 MHz (B1)
TD-SCDMA-TD-SCDMA 1880-1920 MHz
TD-SCDMA 2010-2025 MHz
TD-SCDMA 1880-1920 MHz
TD-SCDMA 2010-2025 MHz
UMTSUMTS 850 MHz
UMTS 900 MHz
UMTS 1700/2100 MHz
UMTS 1900 MHz
UMTS 2100 MHz
--
LTELTE 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-TDD 2300 MHz (B40)
LTE-TDD 2600 MHz (B38)
LTE-FDD 700 MHz (B12)
LTE-FDD 700 MHz (B13)
LTE-FDD 700 MHz (B17)
LTE-FDD 700 MHz (B28)
LTE-FDD 800 MHz (B20)
LTE-FDD 850 MHz (B5)
LTE-FDD 850 MHz (B18)
LTE-FDD 850 MHz (B19)
LTE-FDD 850 MHz (B26)
LTE-FDD 900 MHz (B8)
LTE-FDD 1700 MHz (B4)
LTE-FDD 1700 MHz (B66)
LTE-FDD 1800 MHz (B3)
LTE-FDD 1900 MHz (B2)
LTE-FDD 1900 MHz (B25)
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-FDD 600 MHz (B71)
LTE-FDD 700 MHz (B12)
LTE-FDD 700 MHz (B13)
LTE-FDD 700 MHz (B17)
LTE-FDD 700 MHz (B28)
LTE-FDD 800 MHz (B20)
LTE-FDD 850 MHz (B5)
LTE-FDD 850 MHz (B18)
LTE-FDD 850 MHz (B19)
LTE-FDD 850 MHz (B26)
LTE-FDD 900 MHz (B8)
LTE-FDD 1700 MHz (B4)
LTE-FDD 1700 MHz (B66)
LTE-FDD 1800 MHz (B3)
LTE-FDD 1900 MHz (B2)
LTE-FDD 1900 MHz (B25)
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-FDD 600 MHz (B71)

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 7
EV-DO Rev. A
TD-SCDMA
TD-HSDPA
UMTS
EDGE
GPRS
HSPA+
LTE Cat 7
EV-DO Rev. A
TD-SCDMA
TD-HSDPA

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 8.1 Oreo
Android 9.0 Pie
Android 11Android 10

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 660 MSM8976 PlusMediaTek Helio P60 (MT6771)MediaTek Helio P60 (MT6771)
Process technology14 nm12 nm12 nm
CPU4x 2.2 GHz Kryo 260, 4x 1.84 GHz Kryo 2604x 2.0 GHz ARM Cortex-A73, 4x 2.0 GHz ARM Cortex-A534x 2.0 GHz ARM Cortex-A73, 4x 2.0 GHz ARM Cortex-A53
CPU bits64 bit64 bit64 bit
Instruction setARMv8ARMv8-AARMv8-A
CPU cores888
CPU frequency2200 MHz2000 MHz2000 MHz
GPUQualcomm Adreno 512ARM Mali-G72 MP3ARM Mali-G72 MP3
GPU cores-33
GPU frequency650 MHz800 MHz800 MHz
RAM capacity4 GB
6 GB
6 GB4 GB
RAM typeLPDDR4XLPDDR4XLPDDR4X
RAM channelsDouble channelDouble channelDouble channel
RAM frequency1866 MHz1800 MHz1800 MHz

Storage

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

Storage32 GB
64 GB
128 GB
128 GB64 GB
eMMC 5.1--

Memory cards

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

Types-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 size5.99 in
152.15 mm
15.21 cm
6.1 in
154.94 mm
15.49 cm
6.1 in
154.94 mm
15.49 cm
Width2.68 in
68.04 mm
6.8 cm
2.56 in
64.93 mm
6.49 cm
2.56 in
64.93 mm
6.49 cm
Height5.36 in
136.08 mm
13.61 cm
5.54 in
140.68 mm
14.07 cm
5.54 in
140.68 mm
14.07 cm
Aspect ratio2:1
2:1 (18:9)
2.167:12.167:1
Resolution1080 x 2160 pixels720 x 1560 pixels720 x 1560 pixels
Pixel density403 ppi
158 ppcm
282 ppi
110 ppcm
282 ppi
110 ppcm
Color depth24 bit
16777216 colors
24 bit
16777216 colors
24 bit
16777216 colors
Display area77.63 %67.49 %67.49 %
Other featuresCapacitive
Multi-touch
Scratch resistant
Capacitive
Multi-touch
Scratch resistant
Capacitive
Multi-touch
Scratch resistant
Corning Gorilla Glass 5
2.5D curved glass screen
LTPS (Low Temperature PolySilicon)
1500:1 contrast ratio
500 cd/m²
85% NTSC
In-cell
Oleophobic coating
Gloves Mode
In-cell
Oleophobic coating
Gloves Mode

Sensors

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

SensorsProximity
Light
Accelerometer
Compass
Gyroscope
Barometer
Fingerprint
Hall
Proximity
Light
Accelerometer
Compass
Gyroscope
Barometer
Pedometer
Fingerprint
Proximity
Light
Accelerometer
Compass
Gyroscope
Barometer
Pedometer
Fingerprint
Fingerprint sensor model - Fingerprint Cards FPC1028Side-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 IMX486 Exmor RS--
Sensor typeCMOS--
Sensor format1/2.9"--
Pixel size1.25 µm
0.001250 mm
--
Aperturef/1.75f/2.2f/2.2
Focal length and 35 mm equivalent4.07 mm--
Flash typeDual LEDDual LEDDual LED
Image resolution4000 x 3000 pixels
12 MP
4608 x 3456 pixels
15.93 MP
4608 x 3456 pixels
15.93 MP
Video resolution3840 x 2160 pixels
8.29 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
Autofocus
Continuous shooting
Digital zoom
Geotagging
Panorama
HDR
Touch focus
Face detection
White balance settings
ISO settings
Exposure compensation
Self-timer
Scene mode
720p @ 120 fps
Secondary rear camera - 20 MP
Sensor model - Sony IMX376 Exmor RS (#2)
Sensor type - CMOS BSI (#2)
Sensor size - 1/2.78" (#2)
Pixel size - 2.0 μm (4-in-1 pixel binning) (#2)
Aperture size - f/1.75 (#2)
Secondary rear camera - 5 MP (macro)
Aperture size - f/2.4 (#2)
Third rear camera - 2 MP (depth-sensing)
Secondary rear camera - 5 MP (macro)
Aperture size - f/2.4 (#2)
Third rear camera - 2 MP (depth-sensing)

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 modelSony IMX376 Exmor RS--
Sensor typeCMOS BSICMOSCMOS
Sensor format1/2.78"--
Pixel size1 µm
0.001000 mm
--
Aperturef/2.2f/2.2f/2.2
Focal length and 35 mm equivalent3.82 mm--
Number of lenses-55
Auxiliary lightLED--
Image resolution5184 x 3880 pixels
20.11 MP
3264 x 2448 pixels
7.99 MP
3264 x 2448 pixels
7.99 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
Features-Face unlockFace unlock
Pixel size - 2.0 μm (4-in-1 pixel binning)
HDR
--

Audio

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

SpeakerLoudspeaker
Earpiece
Loudspeaker
Earpiece
Loudspeaker
Earpiece
Headphone adapter--

Radio

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

RadioNoYesYes

Tracking/Positioning

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

Tracking/PositioningGPS
A-GPS
GLONASS
BeiDou
GPS
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
802.11a
802.11b
802.11g
802.11n
802.11n 5GHz
802.11ac
Dual band
Wi-Fi Hotspot
Wi-Fi Direct
Wi-Fi Display
2x2 MiMO--

Bluetooth

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

Version5.04.24.2
FeaturesA2DP
HID
A2DP
LE
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-CUSB Type-C
Version2.02.02.0
FeaturesCharging
Host
Mass storage
On-The-Go
Charging
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 jackNoYesYes

Connectivity

Information about other important connectivity technologies supported by the devices.

ConnectivityComputer sync
OTA sync
Infrared
Tethering
VoLTE
Computer sync
OTA sync
Tethering
NFC
VoLTE
Computer sync
OTA 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
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+
AC3
AMR
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
AAC
AAC+
AMR
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
AAC
AAC+
AMR
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
VC-1
VP8
Xvid
3GPP
AVI
H.263
H.264
H.265
MKV
MP4
WebM
WMV
Xvid
3GPP
AVI
H.263
H.264
H.265
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.

Capacity3010 mAh5580 mAh5580 mAh
TypeLi-PolymerLi-PolymerLi-Polymer
4G talk time-16 h
960 min
0.7 days
16 h
960 min
0.7 days
4G stand-by time-570 h
34200 min
23.8 days
570 h
34200 min
23.8 days
Charger output power5 V / 2 A5 V / 3 A5 V / 3 A
Quick charge technologyQualcomm 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)0.963 W/kg--
Body SAR (EU)0.639 W/kg--
Head SAR (USA)1.16 W/kg--
Body SAR (USA)0.66 W/kg--

Additional features

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

Additional featuresM1804D2SI - SAR (Specific Absorption Rate) India: head - 1.092 W/kg; body - 0.259 W/kg--
 Xiaomi Mi A2Ulefone Armor 8 ProUlefone Armor 8