Screen size
mblu 21Winner: 6.8"+21%
MX45.4"
Quick verdict
mblu 21 leads the measured specs 9-6.
Measured wins
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9
spec wins
Overall winner
Ties
3
equal specs
MX4
6
spec wins
Screen size
Technology
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GSM / HSPA / LTE
MX4
GSM / HSPA / LTE
2G bands
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GSM 850 / 900 / 1800 / 1900
MX4
GSM 850 / 900 / 1800 / 1900
3G bands
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HSDPA 850 / 900 / 1900 / 2100
MX4
HSDPA 850 / 900 / 1900 / 2100 , TD-SCDMA - China Mobile
4G bands
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LTE
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
Stereo speakers
MX4
1, 3, 7, 38, 39, 40, 41 - China Mobile
Speed
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HSPA, LTE
MX4
HSPA, LTE Cat4 150/50 Mbps
Announced
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2024, November 27
MX4
2014, September. Released 2014, September
Status
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Available. Released 2024, November
MX4
Discontinued
Dimensions
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-
MX4
144 x 75.2 x 8.9 mm (5.67 x 2.96 x 0.35 in)
Weight
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-
MX4
147 g (5.19 oz)
SIM
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Nano-SIM + Nano-SIM
MX4
Micro-SIM
Type
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IPS LCD, 90Hz
MX4
IPS LCD
Size
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6.79 inches, 109.5 cm2
MX4
5.36 inches, 81.8 cm2 (~75.5% screen-to-body ratio)
Resolution
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720 x 1640 pixels (~264 ppi density)
MX4
1152 x 1920 pixels, 5:3 ratio (~418 ppi density)
Protection
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-
MX4
Corning Gorilla Glass 3
OS
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Android 14
MX4
Android 4.4.4 (KitKat), Flyme 4
Chipset
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Unisoc T606 (12 nm)
MX4
Mediatek MT6595
CPU
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Octa-core (2x1.6 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)
MX4
Octa-core (4x2.2 GHz Cortex-A17 & 4x1.7 GHz Cortex-A7)
GPU
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Mali-G57 MP1
MX4
PowerVR G6200
Card slot
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Unspecified
MX4
No
Internal
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64GB 4GB RAM
MX4
16GB 2GB RAM, 32GB 2GB RAM, 64GB 2GB RAM
Single
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13 MP, AF auxiliary lens
MX4
20.7 MP, f/2.2, 1/2.3", AF
Features
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LED flash, panorama, HDR
MX4
Dual-LED dual-tone flash, HDR, panorama
Video
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Yes
MX4
4K@30fps, 1080p@30fps
Single
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8 MP
MX4
2 MP
Video
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Yes
MX4
1080p@30fps
Loudspeaker
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Yes
MX4
Yes
3.5mm jack
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Unspecified
MX4
Yes
WLAN
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Wi-Fi 802.11 a/b/g/n/ac, dual-band
MX4
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth
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5.0, A2DP
MX4
4.0, A2DP
Positioning
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GPS
MX4
GPS, GLONASS, BDS, QZSS
NFC
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No
MX4
No
Radio
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No
MX4
No
USB
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USB Type-C
MX4
microUSB 2.0 (MHL TV-out), OTG
Sensors
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Fingerprint (side-mounted); unspecified sensors
MX4
Accelerometer, gyro, proximity, compass
Type
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4900 mAh
MX4
Li-Ion 3100 mAh, non-removable
Colors
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Black, Blue, White
MX4
Gray, Gold, White
Models
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M2416
MX4
-
Price
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-
MX4
About 340 EUR