Comparison between:
- Alcatel Pixi 4 (5) 4G
- Oukitel U20 Plus
- Infinix Smart 2
- Posh Mobile Revel Max LTE L551

Brand and model

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

Alcatel Pixi 4 (5) 4GOukitel U20 PlusInfinix Smart 2Posh Mobile Revel Max LTE L551
Alcatel Pixi 4 (5) 4GOukitel U20 Plus
Prices
Infinix Smart 2
Prices
Posh Mobile Revel Max LTE L551
Model aliasPixi 4 (5) LTE
5045A
5045D
5045G
5045J
5045X
U20PlusSmart2
X5515F
L551

Design

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

Width72.5 mm
7.25 cm
0.24 ft
2.85 in
77.5 mm
7.75 cm
0.25 ft
3.05 in
71 mm
7.1 cm
0.23 ft
2.8 in
78 mm
7.8 cm
0.26 ft
3.07 in
Height140.7 mm
14.07 cm
0.46 ft
5.54 in
154 mm
15.4 cm
0.51 ft
6.06 in
148 mm
14.8 cm
0.49 ft
5.83 in
153 mm
15.3 cm
0.5 ft
6.02 in
Thickness9.5 mm
0.95 cm
0.03 ft
0.37 in
8.4 mm
0.84 cm
0.03 ft
0.33 in
8.4 mm
0.84 cm
0.03 ft
0.33 in
9.4 mm
0.94 cm
0.03 ft
0.37 in
Weight169 g
0.37 lbs
5.96 oz
195 g
0.43 lbs
6.88 oz
138 g
0.3 lbs
4.87 oz
168 g
0.37 lbs
5.93 oz
Volume96.91 cm³
5.89 in³
100.25 cm³
6.09 in³
88.27 cm³
5.36 in³
112.18 cm³
6.81 in³
ColorsBlack
White
Orange
Blue
Gray
Rose-gold
Champagne
Gray
Black
Red
Gold
Black
Blue
Gold
Black
Body materialsPlasticPolycarbonatePlastic
Metal
Plastic

SIM card

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

SIM card typeMicro-SIMMicro-SIM
Nano-SIM / microSD
Nano-SIMMicro-SIM
Number of SIM cards1222
FeaturesDual SIM optional (A variant of the model with two SIM card slots is available)-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)
5045D - Dual SIM---

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
W-CDMA-W-CDMA 850 MHz
W-CDMA 900 MHz
W-CDMA 2100 MHz
W-CDMA 900 MHz
W-CDMA 2100 MHz
-
UMTSUMTS 850 MHz
UMTS 900 MHz
UMTS 1900 MHz
UMTS 2100 MHz
UMTS 1700/2100 MHz (5045G)
--UMTS 850 MHz
UMTS 1900 MHz
UMTS 2100 MHz
LTELTE 2600 MHz
LTE 800 MHz (5045D; 5045X)
LTE 900 MHz (5045D; 5045X)
LTE 1800 MHz (5045A; 5045D; 5045J; 5045X)
LTE 2100 MHz (5045A; 5045X)
LTE 700 MHz (B28) (5045A; 5045D; 5045D; 5045J; 5045X)
LTE 1900 MHz (5045A; 5045G; 5045J)
LTE 1700/2100 MHz (5045A; 5045G; 5045J)
LTE 850 MHz (5045G)
LTE 700 MHz Class 13 (5045A; 5045J)
LTE 700 MHz Class 17 (5045A; 5045G; 5045J)
LTE 800 MHz
LTE 900 MHz
LTE 1800 MHz
LTE 2100 MHz
LTE 2600 MHz
LTE 800 MHz
LTE 1800 MHz
LTE 2100 MHz
LTE 2600 MHz
LTE-TDD 2300 MHz (B40)
LTE 850 MHz
LTE 1700/2100 MHz
LTE 1900 MHz
LTE 2100 MHz

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 4
UMTS
EDGE
GPRS
HSPA+
LTE Cat 4
UMTS
EDGE
GPRS
HSPA+
LTE Cat 4
UMTS
EDGE
GPRS
HSPA+
LTE Cat 4

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 6.0 MarshmallowAndroid 6.0 MarshmallowX OS Hummingbird 3.3 (Android 8.1 Oreo)Android 6.0 Marshmallow

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.

SoCMediaTek MT6735MMediaTek MT6737TMediaTek MT6739MediaTek MT6737
Process technology28 nm28 nm28 nm28 nm
CPUARM Cortex-A53ARM Cortex-A53ARM Cortex-A53ARM Cortex-A53
CPU bits64 bit64 bit64 bit64 bit
Instruction setARMv8-AARMv8-AARMv8-AARMv8-A
Level 1 cache memory (L1)32 KB + 32 KB32 KB + 32 KB-32 KB + 32 KB
Level 2 cache memory (L2)512 KB
0.5 MB
512 KB
0.5 MB
-512 KB
0.5 MB
CPU cores4444
CPU frequency1000 MHz1500 MHz1500 MHz1250 MHz
GPUARM Mali-T720 MP1ARM Mali-T720 MP2PowerVR GE8100ARM Mali-T720 MP1
GPU cores12-1
GPU frequency500 MHz600 MHz570 MHz600 MHz
RAM capacity1 GB2 GB2 GB
3 GB
2 GB
RAM typeLPDDR3LPDDR3LPDDR3LPDDR3
RAM channelsSingle channelSingle channelSingle channelSingle channel
RAM frequency533 MHz733 MHz667 MHz640 MHz

Storage

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

Storage8 GB16 GB16 GB
32 GB
16 GB

Memory cards

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

TypesmicroSD
microSDHC
microSD
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/technologyTFTIPSIPSIPS
Diagonal size5 in
127 mm
12.7 cm
5.5 in
139.7 mm
13.97 cm
5.45 in
138.43 mm
13.84 cm
5.5 in
139.7 mm
13.97 cm
Width2.45 in
62.23 mm
6.22 cm
2.7 in
68.49 mm
6.85 cm
2.44 in
61.91 mm
6.19 cm
2.7 in
68.49 mm
6.85 cm
Height4.36 in
110.71 mm
11.07 cm
4.79 in
121.76 mm
12.18 cm
4.87 in
123.82 mm
12.38 cm
4.79 in
121.76 mm
12.18 cm
Aspect ratio1.779:11.778:1
16:9
2:1
2:1 (18:9)
1.778:1
16:9
Resolution480 x 854 pixels1080 x 1920 pixels720 x 1440 pixels720 x 1280 pixels
Pixel density196 ppi
77 ppcm
401 ppi
157 ppcm
295 ppi
115 ppcm
267 ppi
104 ppcm
Color depth24 bit
16777216 colors
24 bit
16777216 colors
24 bit
16777216 colors
24 bit
16777216 colors
Display area67.75 %70.1 %73.18 %70.1 %
Other featuresCapacitive
Multi-touch
Capacitive
Multi-touch
Capacitive
Multi-touch
Capacitive
Multi-touch
-2.5D curved glass screen
GFF full lamination
2000:1 contrast ratio
500 cd/m²
2.5D curved glass screen-

Sensors

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

SensorsProximity
Light
Accelerometer
Proximity
Light
Accelerometer
Compass
Gyroscope
Fingerprint
Proximity
Light
Accelerometer
Compass
Proximity
Light
Accelerometer

Primary camera

The primary camera of the mobile device is usually placed at its back and is used for taking photos and recording videos.

Sensor model-Sony IMX135 Exmor RS--
Sensor typeCMOSCMOSCMOSCMOS
Sensor size-4.69 x 3.52 mm
0.23 in
--
Pixel size-1.127 µm
0.001127 mm
--
Crop factor-7.38--
ISO-100 - 1600--
Aperture-f/2f/2-
Focal length-4 mm
29.51 mm *(35 mm / full frame)
--
Flash typeLEDLEDDual LEDLED
Image resolution3264 x 2448 pixels
7.99 MP
4160 x 3120 pixels
12.98 MP
4160 x 3120 pixels
12.98 MP
4160 x 3120 pixels
12.98 MP
Video resolution1280 x 720 pixels
0.92 MP
1920 x 1080 pixels
2.07 MP
1280 x 720 pixels
0.92 MP
1280 x 720 pixels
0.92 MP
Video FPS30 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
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
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
-Interpolated resolution - 16 MP
Secondary rear camera - 0.3 MP
Sensor model - GalaxyCore GC030A (#2)
Sensor size - 1.44 x 1.08 mm (#2)
--

Secondary camera

Secondary cameras are placed above the screen of the device and are usually used for video calls, gesture recognition, etc.

Sensor model-GalaxyCore GC5005--
Sensor type-CMOS--
Sensor size-2.92 x 2.2 mm
0.14 in
--
Pixel size-1.127 µm
0.001127 mm
--
Crop factor-11.84--
Aperture-f/2.8f/2-
Focal length-4 mm
47.38 mm *(35 mm / full frame)
--
Flash typeLED-Dual LED-
Image resolution2560 x 1920 pixels
4.92 MP
2592 x 1944 pixels
5.04 MP
3264 x 2448 pixels
7.99 MP
2560 x 1920 pixels
4.92 MP
Video resolution-640 x 480 pixels
0.31 MP
640 x 480 pixels
0.31 MP
640 x 480 pixels
0.31 MP
Video FPS-30 fps30 fps30 fps
--Face unlock-

Audio

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

SpeakerLoudspeaker
Earpiece
Loudspeaker
Earpiece
Loudspeaker
Earpiece
Loudspeaker
Earpiece

Radio

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

RadioYesYesYesYes

Tracking/Positioning

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

Tracking/PositioningGPS
A-GPS
GPS
A-GPS
GLONASS
GPS
A-GPS
GPS
A-GPS

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
802.11b
802.11g
802.11n
Wi-Fi Hotspot
Wi-Fi Direct
802.11b
802.11g
802.11n
Wi-Fi Hotspot
802.11b
802.11g
802.11n
Wi-Fi Hotspot

Bluetooth

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

Version4.04.04.14.1
FeaturesA2DPA2DPA2DPA2DP
LE

USB

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

Connector typeMicro USBMicro USBMicro USBMicro USB
Version2.02.02.02.0
FeaturesCharging
Mass storage
Charging
Mass storage
Charging
Mass storage
Charging
Mass storage

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
Tethering
Computer sync
OTA sync
Tethering
HotKnot
Computer sync
OTA sync
Tethering
Computer sync
OTA sync
Tethering

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
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
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
AAC
AMR
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
AAC
AMR
eAAC+
MIDI
MP3
WMA
WAV
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
MP4
VP8
VP9
Xvid
3GPP
AVI
MP4
Xvid
3GPP
AVI
MP4
Xvid
3GPP
AVI
MP4
Xvid

Battery

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

Capacity2000 mAh3300 mAh3050 mAh2800 mAh
TypeLi-IonLi-IonLi-PolymerLi-Ion
2G talk time12 h
720 min
0.5 days
--7 h
420 min
0.3 days
2G stand-by time473 h
28380 min
19.7 days
--200 h
12000 min
8.3 days
3G talk time11 h
660 min
0.5 days
--7 h
420 min
0.3 days
3G stand-by time441 h
26460 min
18.4 days
--200 h
12000 min
8.3 days
4G stand-by time196 h
11760 min
8.2 days
---
Charger output power-5 V / 1 A5 V / 1.2 A-
FeaturesRemovableNon-removableNon-removableNon-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)0.466 W/kg-0.551 W/kg-
Body SAR (EU)0.669 W/kg-0.811 W/kg-
Head SAR (USA)--0.42 W/kg0.81 W/kg
Body SAR (USA)--0.983 W/kg1.06 W/kg
 Alcatel Pixi 4 (5) 4GOukitel U20 PlusInfinix Smart 2Posh Mobile Revel Max LTE L551