Comparison between:
- Xiaomi Redmi 7A
- Meizu U20

Brand and model

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

Xiaomi Redmi 7AMeizu U20
Xiaomi Redmi 7A
Prices
Meizu U20
Prices
Model alias-U685H

Design

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

Width70.41 mm
7.041 cm
0.231 ft
2.772 in
75.4 mm
7.54 cm
0.247 ft
2.969 in
Height146.3 mm
14.63 cm
0.48 ft
5.76 in
153 mm
15.3 cm
0.502 ft
6.024 in
Thickness9.55 mm
0.955 cm
0.031 ft
0.376 in
7.7 mm
0.77 cm
0.025 ft
0.303 in
Weight165 g
0.36 lbs
5.82 oz
158 g
0.35 lbs
5.57 oz
Volume98.37 cm³
5.97 in³
88.83 cm³
5.39 in³
ColorsBlack
Blue
Silver
Gold
Rose-gold
Black
White
Body materialsPolycarbonateMetal
Glass

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
Number of SIM cards22
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
CDMACDMA 800 MHzCDMA 800 MHz
W-CDMAW-CDMA 850 MHz
W-CDMA 900 MHz
W-CDMA 2100 MHz
-
TD-SCDMATD-SCDMA 1900 MHz
TD-SCDMA 2000 MHz
TD-SCDMA 1880-1920 MHz
TD-SCDMA 2010-2025 MHz
UMTS-UMTS 900 MHz
UMTS 1900 MHz
UMTS 2100 MHz
LTELTE-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 850 MHz
LTE 900 MHz
LTE 1800 MHz
LTE 2100 MHz
LTE 1800 MHz
LTE 2600 MHz
LTE-TDD 1900 MHz (B39)
LTE-TDD 2300 MHz (B40)
LTE-TDD 2500 MHz (B41)
LTE-TDD 2600 MHz (B38)

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
EV-DO Rev. A
TD-SCDMA
TD-HSDPA
UMTS
EDGE
GPRS
HSPA+
LTE Cat 6
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)MIUI V10.2 (Android 9.0 Pie)
MIUI V11.0.1 (Android 10)
FlyMe (Yun OS)

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 439MediaTek Helio P10 (MT6755)
Process technology12 nm28 nm
CPU4x 1.95 GHz ARM Cortex-A53, 4x 1.45 GHz ARM Cortex-A534x 1.8 GHz ARM Cortex-A53, 4x 1.2 GHz ARM Cortex-A53
CPU bits64 bit64 bit
Instruction setARMv8ARMv8-A
Level 1 cache memory (L1)-256 KB + 256 KB
Level 2 cache memory (L2)-2048 KB
2 MB
CPU cores88
CPU frequency1950 MHz1800 MHz
GPUQualcomm Adreno 505ARM Mali-T860 MP2
GPU cores-2
GPU frequency-700 MHz
RAM capacity2 GB
3 GB
2 GB
3 GB
RAM typeLPDDR3LPDDR3
RAM channelsSingle channelSingle channel
RAM frequency-933 MHz

Storage

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

Storage16 GB
32 GB
16 GB
32 GB

Memory cards

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

TypesmicroSD
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/technologyIPSIPS
Diagonal size5.45 in
138.43 mm
13.84 cm
5.5 in
139.7 mm
13.97 cm
Width2.44 in
61.91 mm
6.19 cm
2.7 in
68.49 mm
6.85 cm
Height4.87 in
123.82 mm
12.38 cm
4.79 in
121.76 mm
12.18 cm
Aspect ratio2:1
2:1 (18:9)
1.778:1
16:9
Resolution720 x 1440 pixels1080 x 1920 pixels
Pixel density295 ppi
115 ppcm
401 ppi
157 ppcm
Color depth24 bit
16777216 colors
24 bit
16777216 colors
Display area74.65 %72.52 %
Other featuresCapacitive
Multi-touch
Capacitive
Multi-touch
Scratch resistant
2.5D curved glass screen
1000:1 contrast ratio
70.8% NTSC
2.5D curved glass screen
1000:1 contrast ratio
400 cd/m²

Sensors

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

SensorsProximity
Light
Accelerometer
Compass
Proximity
Light
Accelerometer
Compass
Gyroscope
Fingerprint
Hall

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 RSOmniVision OV13853
Sensor typeCMOSPureCel
Sensor size-4.82 x 3.68 mm
0.24 in
Sensor format1/2.9"-
Pixel size1.25 µm
0.001250 mm
1.157 µm
0.001157 mm
Crop factor-7.14
Aperturef/2.2f/2.2
Focal length and 35 mm equivalent-3.5 mm
24.99 mm *(35 mm / full frame)
Number of lenses-5
Flash typeDual LEDDual LED
Image resolution4160 x 3120 pixels
12.98 MP
4160 x 3120 pixels
12.98 MP
Video resolution1920 x 1080 pixels
2.07 MP
1920 x 1080 pixels
2.07 MP
Video FPS30 fps30 fps
FeaturesAutofocus
Continuous shooting
Digital zoom
Optical zoom
Digital image stabilization
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
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)

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 model-Hynix Hi-553
Sensor type-CMOS BSI
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/2.2
Focal length and 35 mm equivalent-3.5 mm
41.44 mm *(35 mm / full frame)
Number of lenses-4
Image resolution2592 x 1944 pixels
5.04 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
FeaturesFace unlock-

Audio

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

SpeakerLoudspeaker
Earpiece
Loudspeaker

Radio

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

RadioYesNo

Tracking/Positioning

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

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

Bluetooth

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

Version4.24.0
FeaturesA2DP
LE
A2DP
LE

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
Host
Mass storage
On-The-Go
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
VoLTE
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
AAC+
AMR
AMR-WB
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
AAC
AMR
AMR-WB
eAAC+
FLAC
M4A
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
DivX
H.263
H.264
H.265
MKV
MP4
VC-1
Xvid
3GPP
AVI
MKV
QuickTime
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.

Capacity4000 mAh3260 mAh
TypeLi-PolymerLi-Polymer
2G talk time25 h
1500 min
1 days
-
3G talk time25 h
1500 min
1 days
-
Charger output power5 V / 2 A5 V / 2 A
FeaturesNon-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)0.557 W/kg-
Body SAR (EU)1.166 W/kg-
Head SAR (USA)1 W/kg-
Body SAR (USA)1.12 W/kg-

Additional features

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

Additional featuresP2i nano-coating-
 Xiaomi Redmi 7AMeizu U20