Screen size
equal specsMi-425 Stellar4.0"
Stellar 439 (Mi-439)4.0"
Quick verdict
Stellar 439 (Mi-439) leads the measured specs 7-2.
Measured wins
Mi-425 Stellar
2
spec wins
Ties
7
equal specs
Stellar 439 (Mi-439)
7
spec wins
Overall winner
Screen size
equal specsTechnology
Mi-425 Stellar
GSM / HSPA
Stellar 439 (Mi-439)
GSM / HSPA
2G bands
Mi-425 Stellar
GSM 900 / 1800
Stellar 439 (Mi-439)
GSM 900 / 1800 - SIM 1 & SIM 2
3G bands
Mi-425 Stellar
HSDPA 2100
Stellar 439 (Mi-439)
HSDPA 2100
Speed
Mi-425 Stellar
HSPA
Resolution
equal specsRefresh rate
Peak brightness
Pixel density
equal specsCPU speed
equal specsRAM
Storage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
Stellar 439 (Mi-439)
HSPA 21.1/5.76 Mbps
Announced
Mi-425 Stellar
2012, June. Released 2012, June
Stellar 439 (Mi-439)
2014, August. Released 2014, August
Status
Mi-425 Stellar
Discontinued
Stellar 439 (Mi-439)
Discontinued
Dimensions
Mi-425 Stellar
125 x 63.5 x 12.5 mm (4.92 x 2.5 x 0.49 in)
Stellar 439 (Mi-439)
125 x 63 x 10 mm (4.92 x 2.48 x 0.39 in)
Weight
Mi-425 Stellar
110 g (3.88 oz)
Stellar 439 (Mi-439)
113.8 g (4.02 oz)
SIM
Mi-425 Stellar
Mini-SIM
Stellar 439 (Mi-439)
Dual SIM (Mini-SIM)
Type
Mi-425 Stellar
TFT, 256K colors
Stellar 439 (Mi-439)
TFT, 256K colors
Size
Mi-425 Stellar
4.0 inches, 45.5 cm2 (~57.4% screen-to-body ratio)
Stellar 439 (Mi-439)
4.0 inches, 45.5 cm2 (~57.8% screen-to-body ratio)
Resolution
Mi-425 Stellar
480 x 800 pixels, 5:3 ratio (~233 ppi density)
Stellar 439 (Mi-439)
480 x 800 pixels, 5:3 ratio (~233 ppi density)
OS
Mi-425 Stellar
Android 2.3 (Gingerbread), upgradable to 4.0 (Ice Cream Sandwich)
Stellar 439 (Mi-439)
Android 4.4.2 (KitKat)
CPU
Mi-425 Stellar
1.0 GHz
Stellar 439 (Mi-439)
Dual-core 1.0 GHz Cortex-A7
Chipset
Mi-425 Stellar
-
Stellar 439 (Mi-439)
Mediatek MT6572M (28 nm)
GPU
Mi-425 Stellar
-
Stellar 439 (Mi-439)
Mali-400
Card slot
Mi-425 Stellar
microSDHC (dedicated slot)
Stellar 439 (Mi-439)
microSDHC
Internal
Mi-425 Stellar
149MB
Stellar 439 (Mi-439)
4GB 512MB RAM
Single
Mi-425 Stellar
5 MP, AF
Stellar 439 (Mi-439)
3.15 MP
Features
Mi-425 Stellar
LED flash
Stellar 439 (Mi-439)
-
Video
Mi-425 Stellar
Yes
Stellar 439 (Mi-439)
720p@25fps
Single
Mi-425 Stellar
VGA
Stellar 439 (Mi-439)
1.3 MP
Video
Mi-425 Stellar
Stellar 439 (Mi-439)
Loudspeaker
Mi-425 Stellar
Yes
Stellar 439 (Mi-439)
Yes, dual speakers
3.5mm jack
Mi-425 Stellar
Yes
Stellar 439 (Mi-439)
Yes
WLAN
Mi-425 Stellar
Wi-Fi 802.11 b/g, hotspot
Stellar 439 (Mi-439)
Wi-Fi 802.11 b/g/n, hotspot
Bluetooth
Mi-425 Stellar
Yes
Stellar 439 (Mi-439)
3.0, A2DP
Positioning
Mi-425 Stellar
GPS, A-GPS
Stellar 439 (Mi-439)
A-GPS
Radio
Mi-425 Stellar
FM radio
Stellar 439 (Mi-439)
FM radio
USB
Mi-425 Stellar
Proprietary
Stellar 439 (Mi-439)
microUSB 2.0
NFC
Mi-425 Stellar
-
Stellar 439 (Mi-439)
No
Sensors
Mi-425 Stellar
Accelerometer, proximity, compass
Stellar 439 (Mi-439)
Accelerometer
Other
Mi-425 Stellar
MP4/WMV/H.263 player MP3/WAV/AAC+ player Organizer Document viewer Photo/video editor Voice memo Predictive text input
Stellar 439 (Mi-439)
-
Type
Mi-425 Stellar
Removable Li-Ion 2000 mAh battery
Stellar 439 (Mi-439)
Li-Ion 1400 mAh battery
Stand-by
Mi-425 Stellar
-
Stellar 439 (Mi-439)
Up to 58 h
Talk time
Mi-425 Stellar
-
Stellar 439 (Mi-439)
Up to 5 h 30 min
Music play
Mi-425 Stellar
-
Stellar 439 (Mi-439)
Up to 15 h
Colors
Mi-425 Stellar
White/Black
Stellar 439 (Mi-439)
Brown, Silver
SAR EU
Mi-425 Stellar
0.36 W/kg (head)
Stellar 439 (Mi-439)
0.85 W/kg (head)
Price
Mi-425 Stellar
About 90 EUR
Stellar 439 (Mi-439)
-