Comparison between:
- Kazam Trooper 451
- LG K4 LTE K121

Brand and model

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

Kazam Trooper 451LG K4 LTE K121
Kazam Trooper 451LG K4 LTE K121
Prices
Model alias-LG-K121
K121

Design

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

Width72.2 mm
7.22 cm
0.24 ft
2.84 in
66.7 mm
6.67 cm
0.22 ft
2.63 in
Height141.3 mm
14.13 cm
0.46 ft
5.56 in
131.9 mm
13.19 cm
0.43 ft
5.19 in
Thickness9.75 mm
0.98 cm
0.03 ft
0.38 in
8.9 mm
0.89 cm
0.03 ft
0.35 in
Weight164 g
0.36 lbs
5.78 oz
120 g
0.26 lbs
4.23 oz
Volume99.47 cm³
6.04 in³
78.3 cm³
4.76 in³
ColorsBlack
White
Gray
Body materialsPlasticPlastic

SIM card

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

SIM card typeMini-SIMNano-SIM
Number of SIM cards21
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
UMTSUMTS 900 MHz
UMTS 2100 MHz
UMTS 850 MHz
UMTS 1700/2100 MHz
UMTS 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+
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 4.4.2 KitKatAndroid 5.1.1 Lollipop

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.

SoCSpreadtrum SC7731GQualcomm Snapdragon 210 MSM8909
Process technology28 nm28 nm
CPUARM Cortex-A7ARM Cortex-A7
CPU bits32 bit32 bit
Instruction setARMv7ARMv7
Level 1 cache memory (L1)32 KB + 32 KB-
Level 2 cache memory (L2)512 KB
0.5 MB
1024 KB
1 MB
CPU cores44
CPU frequency1200 MHz1100 MHz
GPUARM Mali-400 MP2Qualcomm Adreno 304
GPU cores2-
GPU frequency400 MHz400 MHz
RAM capacity512 MB1 GB
RAM channels-Single channel
RAM frequency-533 MHz

Storage

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

Storage4 GB8 GB

Memory cards

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

TypesmicroSD
microSDHC
microSD
microSDHC
microSDXC

Display

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

Type/technologyIPSTFT
Diagonal size5 in
127 mm
12.7 cm
4.5 in
114.3 mm
11.43 cm
Width2.45 in
62.23 mm
6.22 cm
2.2 in
56 mm
5.6 cm
Height4.36 in
110.71 mm
11.07 cm
3.92 in
99.64 mm
9.96 cm
Aspect ratio1.779:11.779:1
Resolution480 x 854 pixels480 x 854 pixels
Pixel density196 ppi
77 ppcm
218 ppi
85 ppcm
Color depth24 bit
16777216 colors
24 bit
16777216 colors
Display area67.75 %63.63 %
Other featuresCapacitive
Multi-touch
Capacitive
Multi-touch

Sensors

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

SensorsProximity
Light
Accelerometer
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 typeCMOSCMOS
Aperture-f/2.8
Flash typeLEDLED
Image resolution2560 x 1920 pixels
4.92 MP
2592 x 1944 pixels
5.04 MP
Video resolution1920 x 1080 pixels
2.07 MP
1280 x 720 pixels
0.92 MP
Video FPS30 fps30 fps
FeaturesAutofocus
Digital zoom
Digital image stabilization
Geotagging
Panorama
HDR
Touch focus
Face detection
White balance settings
ISO settings
Exposure compensation
Scene mode
Autofocus
Continuous shooting
Digital zoom
Digital image stabilization
Geotagging
Panorama
HDR
Touch focus
Face detection
White balance settings
ISO settings
Exposure compensation
Scene mode

Secondary camera

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

Aperture-f/2.8
Image resolution640 x 480 pixels
0.31 MP
1600 x 1200 pixels
1.92 MP
Video resolution640 x 480 pixels
0.31 MP
640 x 480 pixels
0.31 MP
Video FPS-30 fps

Audio

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

SpeakerLoudspeaker
Earpiece
Loudspeaker
Earpiece
-0.7 W (Watt) speaker

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
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
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.

Version4.04.0
FeaturesA2DPA2DP
AVRCP
DIP
GATT
HDP
HFP
HID
HSP
LE
MAP
OPP
PAN
PBAP
SPP

USB

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

Connector typeMicro USBMicro USB
Version2.02.0
FeaturesCharging
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 jackYesYes

Connectivity

Information about other important connectivity technologies supported by the devices.

ConnectivityComputer 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

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
eAAC+
MIDI
MP3
WMA
WAV
AAC
AAC+
AMR
AMR-WB
aptX
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
3GPP
AVI
Flash Video
H.263
H.264
MPEG-4
VP8
VP9
WebM
Xvid

Battery

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

Capacity1800 mAh1940 mAh
TypeLi-IonLi-Ion
2G talk time4 h
240 min
0.2 days
7 h
420 min
0.3 days
2G stand-by time170 h
10200 min
7.1 days
250 h
15000 min
10.4 days
3G talk time4 h
240 min
0.2 days
7 h
420 min
0.3 days
3G stand-by time170 h
10200 min
7.1 days
250 h
15000 min
10.4 days
FeaturesRemovableRemovable

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)0.29 W/kg-
Head SAR (USA)-1.13 W/kg
Body SAR (USA)-1.26 W/kg
 Kazam Trooper 451LG K4 LTE K121