Comparison between:
- Vestel Venus Z30
- Ulefone Armor 21
- Unihertz Jelly Star

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

	Vestel Venus Z30	Ulefone Armor 21	Unihertz Jelly Star

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

Width	75.6 mm 7.56 cm 0.248 ft 2.976 in	81.6 mm 8.16 cm 0.268 ft 3.213 in	49.52 mm 4.952 cm 0.162 ft 1.95 in
Height	155 mm 15.5 cm 0.509 ft 6.102 in	176 mm 17.6 cm 0.577 ft 6.929 in	95.13 mm 9.513 cm 0.312 ft 3.745 in
Thickness	7.9 mm 0.79 cm 0.026 ft 0.311 in	18.1 mm 1.81 cm 0.059 ft 0.713 in	19.37 mm 1.937 cm 0.064 ft 0.763 in
Weight	168 g 0.37 lbs 5.93 oz	400 g 0.88 lbs 14.11 oz	121 g 0.27 lbs 4.27 oz
Volume	92.57 cm³ 5.62 in³	259.94 cm³ 15.79 in³	91.25 cm³ 5.54 in³
Colors	Black Yellow Blue	Black	Red Blue
Body materials	Plastic Metal	Polycarbonate TPU Metal	Polycarbonate
Certification	-	IP68 IP69K MIL-STD-810H	-

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 / microSD	Nano-SIM Nano-SIM / microSD	Nano-SIM Nano-SIM / microSD
Number of SIM cards	2	2	2
Features	-	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)

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 (В5) GSМ 900 МНz (В8) GSМ 1900 МНz (В2)	GSМ 850 МНz (В5) GSМ 900 МНz (В8) GSМ 1900 МНz (В2)
CDMA	-	-	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 850 MHz (B6) W-CDMA 900 MHz (B8) W-CDMA 1700 MHz (B4) W-CDMA 1900 MHz (B2) W-CDMA 2100 MHz (B1)
UMTS	UМТS 900 МНz UМТS 1900 МНz UМТS 2100 МНz	-	-
LTE	LТЕ 800 МНz LТЕ 900 МНz LТЕ 1800 МНz LТЕ 2600 МНz	LТЕ-FDD 700 МНz (В12) LТЕ-FDD 700 МНz (В17) LТЕ-FDD 700 МНz (В28) LТЕ-FDD 800 МНz (В20) LТЕ-FDD 850 МНz (В5) LТЕ-FDD 850 МНz (В19) LТЕ-FDD 900 МНz (В8) LТЕ-FDD 1700 МНz (В4) LТЕ-FDD 1700 МНz (В66) LТЕ-FDD 1800 МНz (В3) LТЕ-FDD 1900 МНz (В2) LТЕ-FDD 2100 МНz (В1) LТЕ-FDD 2600 МНz (В7) LТЕ-ТDD 1900 МНz (В39) LТЕ-ТDD 2000 МНz (В34) LТЕ-ТDD 2300 МНz (В40) LТЕ-ТDD 2600 МНz (В38)	LТЕ-FDD 700 МНz (В12) LТЕ-FDD 700 МНz (В13) LТЕ-FDD 700 МНz (В17) LТЕ-FDD 700 МНz (В28) LТЕ-FDD 800 МНz (В20) LТЕ-FDD 850 МНz (В5) LТЕ-FDD 850 МНz (В18) LТЕ-FDD 850 МНz (В19) LТЕ-FDD 850 МНz (В26) LТЕ-FDD 900 МНz (В8) LТЕ-FDD 1700 МНz (В4) LТЕ-FDD 1700 МНz (В66) LТЕ-FDD 1800 МНz (В3) LТЕ-FDD 1900 МНz (В2) LТЕ-FDD 1900 МНz (В25) LТЕ-FDD 2100 МНz (В1) LТЕ-FDD 2600 МНz (В7) LТЕ-ТDD 1900 МНz (В39) LТЕ-ТDD 2300 МНz (В40) LТЕ-ТDD 2600 МНz (В38)

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 6

UМТS
GРRS
LТЕ

UМТS
GРRS
НSРА+

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

Operating system (OS)

Аndrоid 8.1 Оrео

Аndrоid 13

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

SoC	МеdiаТеk Неliо Р23 (МТ6763Т)	МеdiаТеk Неliо G99 (МТ6789)	МеdiаТеk Неliо G99 (МТ6789)
Process technology	16 nm	6 nm	6 nm
CPU	4х 2.3 GНz АRМ Соrtех-А53, 4х 1.65 GНz АRМ Соrtех-А53	2х 2.2 GНz АRМ Соrtех-А76, 6х 2.0 GНz АRМ Соrtех-А55	2х 2.2 GНz АRМ Соrtех-А76, 6х 2.0 GНz АRМ Соrtех-А55
CPU bits	64 bit	64 bit	64 bit
Instruction set	ARMv8-A	ARMv8.2-A	ARMv8.2-A
Level 1 cache memory (L1)	16 KB + 16 KB	16 KB + 16 KB	16 KB + 16 KB
CPU cores	8	8	8
CPU frequency	2300 MHz	2200 MHz	2200 MHz
GPU	ARM Mali-G71 MP2	ARM Mali-G57 MC2	ARM Mali-G57 MC2
GPU cores	2	2	2
GPU frequency	770 MHz	1000 MHz	1000 MHz
RAM capacity	4 GB	8 GB	8 GB
RAM type	LPDDR4X	LPDDR4X	LPDDR4X
RAM channels	Double channel	Double channel	Double channel
RAM frequency	1400 MHz	2033 MHz	2033 MHz
	-	Virtual RAM expansion - 8GB	-

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

Storage	64 GB	256 GB	256 GB
	-	UFS 2.0	UFS 2.2

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

Types

microSD
microSDHC
microSDXC

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	6.18 in 156.97 mm 15.7 cm	6.58 in 167.13 mm 16.71 cm	3 in 76.2 mm 7.62 cm
Width	2.76 in 70.2 mm 7.02 cm	2.94 in 74.74 mm 7.47 cm	1.28 in 32.62 mm 3.26 cm
Height	5.53 in 140.4 mm 14.04 cm	5.89 in 149.49 mm 14.95 cm	2.71 in 68.86 mm 6.89 cm
Aspect ratio	2:1 2:1 (18:9)	2:1 2:1 (18:9)	2.111:1
Resolution	1080 x 2160 pixels	720 x 1440 pixels	720 x 1520 pixels
Pixel density	391 ppi 153 ppcm	245 ppi 96 ppcm	561 ppi 220 ppcm
Color depth	24 bit 16777216 colors	24 bit 16777216 colors	24 bit 16777216 colors
Display area	84.38 %	78.05 %	47.84 %
Other features	Capacitive Multi-touch Scratch resistant	Capacitive Multi-touch Scratch resistant	Capacitive Multi-touch
	Corning Gorilla Glass 3 2.5D curved glass screen	Corning Gorilla Glass 5 - 1.1 mm Oleophobic coating 120 Hz refresh rate 240 Hz touch sampling rate 550 cd/m² maximum brightness	2.5D curved glass screen Panda Glass

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

Sensors	Proximity Light Accelerometer	Proximity Light Accelerometer Compass Gyroscope Barometer Pedometer Thermometer Geomagnetic Magnetometer Fingerprint Gravity	Proximity Light Accelerometer Compass Gyroscope Pedometer Geomagnetic Fingerprint
	-	Side-mounted fingerprint sensor	-

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 IMX686 Exmor RS	Samsung S5KGM2
Sensor type	CMOS	CMOS BSI	ISOCELL
Sensor size	-	-	6.4 x 4.8 mm 0.31 in
Sensor format	-	-	1/2"
Pixel size	-	0.8 µm 0.000800 mm	0.8 µm 0.000800 mm
Crop factor	-	-	5.41
Aperture	-	f/1.9	f/1.75
Focal length and 35 mm equivalent	-	-	4.35 mm 23.53 mm ^{*(35 mm / full frame)}
Field of view	-	85 °	85 °
Number of lenses	-	6	-
Flash type	Dual LED	LED	Dual LED
Image resolution	4608 x 3456 pixels 15.93 MP	9216 x 6912 pixels 63.7 MP	8000 x 6000 pixels 48 MP
Video resolution	1920 x 1080 pixels 2.07 MP	2560 x 1440 pixels 3.69 MP	2560 x 1440 pixels 3.69 MP
Video FPS	30 fps	30 fps	30 fps
Features	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 Macro mode Phase detection autofocus (PDAF)	Autofocus Digital zoom Digital image stabilization Geotagging Panorama Touch focus White balance settings ISO settings Exposure compensation
	Secondary rear camera - 2 MP	-	-

Specifications of the Night Vision camera of the device. This type of camera takes photos in the dark by emitting infrared light and capturing its reflection from the objects.

Sensor model	-	OmniVision OV24A1B	-
Aperture	-	f/1.8	-
Field of view	-	78.1 °	-
Infrared lights	-	2	-
Image resolution	-	24 MP	-

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 model	-	Sony IMX481	Sony IMX219 Exmor R
Sensor type	-	CMOS BSI	CMOS BSI
Sensor size	-	-	3.66 x 2.85 mm 0.18 in
Sensor format	-	1/3.09"	-
Pixel size	-	1 µm 0.001000 mm	1.14 µm 0.001140 mm
Crop factor	-	-	9.33
ISO	-	-	100 - 2400
Aperture	-	f/2.2	f/2
Focal length and 35 mm equivalent	-	-	3.81 mm 35.54 mm ^{*(35 mm / full frame)}
Field of view	-	76.6 °	63 °
Number of lenses	-	5	-
Image resolution	4864 x 3274 pixels 15.92 MP	4864 x 3274 pixels 15.92 MP	3520 x 2270 pixels 7.99 MP
Video resolution	1920 x 1080 pixels 2.07 MP	2520 x 1440 pixels 3.63 MP	1920 x 1080 pixels 2.07 MP
Video FPS	30 fps	30 fps	30 fps
Features	-	Face unlock HDR Face detection	Face detection Face unlock

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

Speaker	Loudspeaker Earpiece	Loudspeaker Earpiece	Loudspeaker Earpiece
	-	Infinite Halo with 18 RGB Lights 122 dB speaker 3.5W 11.5 CC sound cavity Hi-Fi Sound	-

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

Radio

Yes

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

Tracking/Positioning

GРS
А-GРS

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

802.11а
802.11b
802.11g
Wi-Fi Disрlаy
802.11а
802.11аd

802.11а
802.11b
802.11g
Wi-Fi Disрlаy
802.11а

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

Version	5.0	5.2	5.2
Features	A2DP	A2DP LE	A2DP LE

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

Connector type	Micro USB	Micro USB	Micro USB
Version	2.0	2.0	2.0
Features	Charging Mass storage On-The-Go	Charging Mass storage On-The-Go	Charging Mass storage On-The-Go

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
VoLTE
ViLTE

Computer sync
OTA sync
Infrared
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
AMR
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV

AAC
AAC+
AMR
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV

AAC
AAC+
AMR
AMR-WB
eAAC+
FLAC
M4A
MIDI
MP3
OGG
WMA
WAV
ALAC
APE

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

Video file formats/codecs

3GPP
AVI
H.263
H.264
MKV
MP4
WebM
WMV
Xvid

3GPP
AVI
H.263
H.264
H.265
MKV
MP4
WebM
WMV
Xvid

3GPP
AVI
DivX
Flash Video
H.263
H.264
MKV
QuickTime
MP4
WebM
WMV
Xvid
FLV
ASF
RM
MOV

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

Capacity	3300 mAh	9600 mAh	2000 mAh
Type	Li-Polymer	Li-Polymer	Li-Ion
4G talk time	-	39 h 2340 min 1.6 days	-
4G stand-by time	-	522 h 31320 min 21.8 days	-
Charger output power	-	11 V / 3 A	5 V / 1.5 A
Features	Non-removable	Fast charging Non-removable	Non-removable
	-	Dock charging - 10 W	-

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)	1.459 W/kg	1.088 W/kg	-
Body SAR (EU)	1.684 W/kg	1.367 W/kg	-
Head SAR (USA)	-	-	1.209 W/kg
Body SAR (USA)	-	-	1.46 W/kg

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

Additional features

Customizable Key
uSmart Connector - endoscope
microscope

Rear-panel LED lights
Customizable button

Vestel Venus Z30

Ulefone Armor 21

Unihertz Jelly Star

Huawei P50 Pro SD888

Vestel Venus Z30

Fly Nimbus 3

Fly Stratus 9