Ulefone Armor 21 vs Ulefone Armor X31: Which is better?

Screen size

Armor 216.6"+0.3%

Armor X316.6"

Technology

Armor 21

GSM / HSPA / LTE

Armor X31

GSM / CDMA / HSPA / LTE

2G bands

Armor 21

GSM 850 / 900 / 1800 / 1900

Armor X31

GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900

3G bands

Armor 21

HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100

Armor X31

HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100

4G bands

Armor 21

1, 2, 3, 4, 5, 7, 8, 12, 17, 19, 20, 28, 34, 38, 39, 40, 41, 66

Resolution

Armor 211080 × 2408 px+55%

Armor X31720 × 1612 px

Refresh rate

Armor 21120 Hz+25%

Armor X3190 Hz

Peak brightness

Armor 21—

Armor X31600 nits

Pixel density

Armor 21401 ppi+33%

Armor X31269 ppi

CPU speed

Armor 21Octa-core (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)+9.1%

Armor X31Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)

RAM

Armor 218.0 GB+25%

Armor X316.0 GB

Storage

Armor 21256 GB+50%

Armor X31128 GB

Main camera

Armor 2164.0 MP+25%

Armor X3148.0 MP

Front camera

equal specs

Armor 2116.0 MP

Armor X3116.0 MP

Battery

Armor 219,600 mAh+37%

Armor X316,050 mAh

Wired charging

Armor 2133 W+45%

Armor X3118 W

Weight

Armor 21400 g

Armor X31305 g+31%

Thickness

Armor 2118.1 mm

Armor X3113.7 mm+32%

IP rating

equal specs

Armor 21IP69K/IP68

Armor X31IP69K/IP68

Wi‑Fi

Armor 21Wi-Fi 802.11 a/b/g/n/ac, dual-band

Armor X31Wi-Fi 802.11 a/b/g/n/ac, dual-band

Bluetooth

equal specs

Armor 215.2, A2DP, LE

Armor X315.2, A2DP, LE

USB

equal specs

Armor 21USB Type-C 2.0

Armor X31USB Type-C 2.0, OTG

5G support

equal specs

Armor 21No

Armor X31No

NFC

equal specs

Armor 21Yes

Armor X31Yes

3.5mm jack

equal specs

Armor 21Yes

Armor X31Yes

SD card

equal specs

Armor 21Yes

Armor X31Yes

Stereo speakers

Armor 21—

Armor X31—

Speed

Armor 21

HSPA, LTE

Armor X31

HSPA, LTE

Announced

Armor 21

2023, May 30

Armor X31

2025, April

Status

Armor 21

Available. Released 2023, May 30

Armor X31

Available. Released 2025, April

Dimensions

Armor 21

176 x 81.6 x 18.1 mm (6.93 x 3.21 x 0.71 in)

Armor X31

173.8 x 82 x 13.7 mm (6.84 x 3.23 x 0.54 in)

Weight

Armor 21

400 g (14.11 oz)

Armor X31

305.5 g (10.79 oz)

SIM

Armor 21

Nano-SIM + Nano-SIM

Armor X31

Nano-SIM + Nano-SIM

Other

Armor 21

IP68/IP69K dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min) Drop resistant up to 1.5m MIL-STD-810H compliant Accessory connector (ulefone endoscope, microscope)

Armor X31

IP68/IP69K dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min) Drop resistant up to 2m MIL-STD-810H compliant Dedicated flashlight 120 lm

Type

Armor 21

IPS LCD, 120Hz

Armor X31

IPS LCD, 90Hz, 600 nits

Size

Armor 21

6.58 inches, 104.3 cm2 (~72.6% screen-to-body ratio)

Armor X31

6.56 inches, 103.4 cm2 (~72.5% screen-to-body ratio)

Resolution

Armor 21

1080 x 2408 pixels, 20:9 ratio (~401 ppi density)

Armor X31

720 x 1612 pixels, 20:9 ratio (~269 ppi density)

Protection

Armor 21

Mohs level 4

Armor X31

Corning Gorilla Glass 5, Mohs level 4

Armor 21

Android 13

Armor X31

Android 14

Chipset

Armor 21

Mediatek Helio G99 (6 nm)

Armor X31

Mediatek Helio G91 (12 nm)

CPU

Armor 21

Octa-core (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)

Armor X31

Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)

GPU

Armor 21

Mali-G57 MC2

Armor X31

Mali-G52 MC2

Card slot

Armor 21

microSDXC (dedicated slot)

Armor X31

microSDXC (dedicated slot)

Internal

Armor 21

256GB 8GB RAM

Armor X31

128GB 6GB RAM

Other

Armor 21

Armor X31

UFS 2.1

Dual

Armor 21

64 MP, f/1.9, (wide), 0.8µm, PDAF 24 MP, f/1.8, (night vision), 2 infrared night vision lights

Armor X31

Features

Armor 21

LED flash, HDR, panorama

Armor X31

LED flash, HDR, panorama

Video

Armor 21

4K@30fps, 1080p@30fps

Armor X31

1440p@30fps, 1080p@30fps

Triple

Armor 21

Armor X31

48 MP, f/1.8, (wide), 0.8µm, PDAF 20 MP, f/1.8, (night vision), 2 infrared lights 2 MP (macro)

Single

Armor 21

16 MP, f/2.2, (wide), 1.0µm

Armor X31

16 MP, f/2.3, (wide), 1.0µm

Video

Armor 21

1080p@30fps

Armor X31

1080p@30fps

Loudspeaker

Armor 21

Yes (122dB)

Armor X31

Yes

3.5mm jack

Armor 21

Yes

Armor X31

Yes

WLAN

Armor 21

Wi-Fi 802.11 a/b/g/n/ac, dual-band

Armor X31

Wi-Fi 802.11 a/b/g/n/ac, dual-band

Bluetooth

Armor 21

5.2, A2DP, LE

Armor X31

5.2, A2DP, LE

Positioning

Armor 21

GPS, GLONASS, GALILEO, BDS

Armor X31

GPS, GLONASS, GALILEO, BDS

NFC

Armor 21

Yes

Armor X31

Yes

Infrared port

Armor 21

Yes

Armor X31

Yes

Radio

Armor 21

Stereo FM radio, RDS, recording

Armor X31

Wireless FM radio

USB

Armor 21

USB Type-C 2.0

Armor X31

USB Type-C 2.0, OTG

Sensors

Armor 21

Fingerprint (side-mounted), accelerometer, proximity, compass, gyro, barometer

Armor X31

Fingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer

Type

Armor 21

Li-Po 9600 mAh

Armor X31

Li-Po 6050 mAh

Charging

Armor 21

33W wired

Armor X31

18W wired

Colors

Armor 21

Black

Armor X31

Black, Black/Orange, Black/Green

Price

Armor 21

About 280 EUR

Armor X31

About 130 EUR

Armor 21 vs Armor X31

Which is better?

Choose Armor 21 for

Choose Armor X31 for

Biggest differences

Armor 21

Armor X31

Head-to-head comparison

Display

Specifications Comparison

Network

Performance

Cameras

Battery

Build

Connectivity

Display

Performance

Cameras

Battery

Build

Connectivity

Launch

Body

Display

Platform

Memory

Main Camera

Selfie camera

Sound

Comms

Features

Battery

Misc