Screen size
equal specsStellar 439 (Mi-439)4.0"
Stellar 440 (Mi-440)4.0"
Quick verdict
Stellar 439 (Mi-439) leads the measured specs 3-0.
Measured wins
Stellar 439 (Mi-439)
3
spec wins
Overall winner
Ties
13
equal specs
Stellar 440 (Mi-440)
0
spec wins
Screen size
equal specsTechnology
Stellar 439 (Mi-439)
GSM / HSPA
Stellar 440 (Mi-440)
GSM / HSPA
2G bands
Stellar 439 (Mi-439)
GSM 900 / 1800 - SIM 1 & SIM 2
Stellar 440 (Mi-440)
GSM 900 / 1800
3G bands
Stellar 439 (Mi-439)
HSDPA 2100
Stellar 440 (Mi-440)
HSDPA 2100
Speed
Stellar 439 (Mi-439)
HSPA 21.1/5.76 Mbps
Resolution
equal specsRefresh rate
Peak brightness
Pixel density
equal specsCPU speed
equal specsRAM
Storage
equal specsMain camera
equal specsFront camera
equal specsBattery
equal specsWired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Stellar 440 (Mi-440)
HSPA 21.1/5.76 Mbps
Announced
Stellar 439 (Mi-439)
2014, August. Released 2014, August
Stellar 440 (Mi-440)
2014, December. Released 2014, December
Status
Stellar 439 (Mi-439)
Discontinued
Stellar 440 (Mi-440)
Discontinued
Dimensions
Stellar 439 (Mi-439)
125 x 63 x 10 mm (4.92 x 2.48 x 0.39 in)
Stellar 440 (Mi-440)
127.6 x 63.8 x 11.5 mm (5.02 x 2.51 x 0.45 in)
Weight
Stellar 439 (Mi-439)
113.8 g (4.02 oz)
Stellar 440 (Mi-440)
119 g (4.20 oz)
SIM
Stellar 439 (Mi-439)
Dual SIM (Mini-SIM)
Stellar 440 (Mi-440)
Mini-SIM
Type
Stellar 439 (Mi-439)
TFT, 256K colors
Stellar 440 (Mi-440)
TFT, 256K colors
Size
Stellar 439 (Mi-439)
4.0 inches, 45.5 cm2 (~57.8% screen-to-body ratio)
Stellar 440 (Mi-440)
4.0 inches, 45.5 cm2 (~55.9% screen-to-body ratio)
Resolution
Stellar 439 (Mi-439)
480 x 800 pixels, 5:3 ratio (~233 ppi density)
Stellar 440 (Mi-440)
480 x 800 pixels, 5:3 ratio (~233 ppi density)
OS
Stellar 439 (Mi-439)
Android 4.4.2 (KitKat)
Stellar 440 (Mi-440)
Android 4.4.2 (KitKat)
Chipset
Stellar 439 (Mi-439)
Mediatek MT6572M (28 nm)
Stellar 440 (Mi-440)
Mediatek MT6572 (28 nm)
CPU
Stellar 439 (Mi-439)
Dual-core 1.0 GHz Cortex-A7
Stellar 440 (Mi-440)
Dual-core 1.0 GHz Cortex-A7
GPU
Stellar 439 (Mi-439)
Mali-400
Stellar 440 (Mi-440)
Mali-400
Card slot
Stellar 439 (Mi-439)
microSDHC
Stellar 440 (Mi-440)
microSDHC (dedicated slot)
Internal
Stellar 439 (Mi-439)
4GB 512MB RAM
Stellar 440 (Mi-440)
4GB 512MB RAM
Single
Stellar 439 (Mi-439)
3.15 MP
Stellar 440 (Mi-440)
3.15 MP
Video
Stellar 439 (Mi-439)
720p@25fps
Stellar 440 (Mi-440)
480p@25fps
Features
Stellar 439 (Mi-439)
-
Stellar 440 (Mi-440)
LED flash
Single
Stellar 439 (Mi-439)
1.3 MP
Stellar 440 (Mi-440)
1.3 MP
Video
Stellar 439 (Mi-439)
Stellar 440 (Mi-440)
Loudspeaker
Stellar 439 (Mi-439)
Yes, dual speakers
Stellar 440 (Mi-440)
Yes, dual speakers
3.5mm jack
Stellar 439 (Mi-439)
Yes
Stellar 440 (Mi-440)
Yes
WLAN
Stellar 439 (Mi-439)
Wi-Fi 802.11 b/g/n, hotspot
Stellar 440 (Mi-440)
Wi-Fi 802.11 b/g/n, hotspot
Bluetooth
Stellar 439 (Mi-439)
3.0, A2DP
Stellar 440 (Mi-440)
2.0, A2DP
Positioning
Stellar 439 (Mi-439)
A-GPS
Stellar 440 (Mi-440)
GPS
NFC
Stellar 439 (Mi-439)
No
Stellar 440 (Mi-440)
No
Radio
Stellar 439 (Mi-439)
FM radio
Stellar 440 (Mi-440)
FM radio
USB
Stellar 439 (Mi-439)
microUSB 2.0
Stellar 440 (Mi-440)
microUSB 2.0
Sensors
Stellar 439 (Mi-439)
Accelerometer
Stellar 440 (Mi-440)
Accelerometer
Type
Stellar 439 (Mi-439)
Li-Ion 1400 mAh battery
Stellar 440 (Mi-440)
Li-Ion 1400 mAh battery
Stand-by
Stellar 439 (Mi-439)
Up to 58 h
Stellar 440 (Mi-440)
Up to 72 h
Talk time
Stellar 439 (Mi-439)
Up to 5 h 30 min
Stellar 440 (Mi-440)
Up to 8 h
Music play
Stellar 439 (Mi-439)
Up to 15 h
Stellar 440 (Mi-440)
Up to 15 h
Colors
Stellar 439 (Mi-439)
Brown, Silver
Stellar 440 (Mi-440)
Gray
SAR EU
Stellar 439 (Mi-439)
0.85 W/kg (head)
Stellar 440 (Mi-440)
0.58 W/kg (head)