Screen size
equal specsStellar 509 (Mi-509)5.0"
Stellar 520 (Mi-520)5.0"
Quick verdict
Stellar 520 (Mi-520) leads the measured specs 3-1.
Measured wins
Stellar 509 (Mi-509)
1
spec wins
Ties
13
equal specs
Stellar 520 (Mi-520)
3
spec wins
Overall winner
Screen size
equal specsTechnology
Stellar 509 (Mi-509)
GSM / HSPA
Stellar 520 (Mi-520)
GSM / HSPA
2G bands
Stellar 509 (Mi-509)
GSM 850 / 900 / 1800 / 1900
Stellar 520 (Mi-520)
GSM 850 / 900 / 1800 / 1900
3G bands
Stellar 509 (Mi-509)
HSDPA 2100
Stellar 520 (Mi-520)
HSDPA 2100
Speed
Stellar 509 (Mi-509)
HSPA 21.1/5.76 Mbps
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
equal specsRAM
equal specsStorage
equal specsMain camera
equal specsFront camera
equal specsBattery
equal specsWired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
equal specsUSB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Stellar 520 (Mi-520)
HSPA 21.1/5.76 Mbps
Announced
Stellar 509 (Mi-509)
2014, May. Released 2014, May
Stellar 520 (Mi-520)
2014, July. Released 2014, July
Status
Stellar 509 (Mi-509)
Discontinued
Stellar 520 (Mi-520)
Discontinued
Dimensions
Stellar 509 (Mi-509)
145 x 79 x 9.5 mm (5.71 x 3.11 x 0.37 in)
Stellar 520 (Mi-520)
145 x 72.8 x 8.5 mm (5.71 x 2.87 x 0.33 in)
Weight
Stellar 509 (Mi-509)
120 g (4.23 oz)
Stellar 520 (Mi-520)
156 g (5.50 oz)
SIM
Stellar 509 (Mi-509)
Mini-SIM
Stellar 520 (Mi-520)
Mini-SIM
Type
Stellar 509 (Mi-509)
IPS LCD
Stellar 520 (Mi-520)
IPS LCD
Size
Stellar 509 (Mi-509)
5.0 inches, 68.9 cm2 (~60.1% screen-to-body ratio)
Stellar 520 (Mi-520)
5.0 inches, 68.9 cm2 (~65.3% screen-to-body ratio)
Resolution
Stellar 509 (Mi-509)
480 x 854 pixels, 16:9 ratio (~196 ppi density)
Stellar 520 (Mi-520)
720 x 1280 pixels, 16:9 ratio (~294 ppi density)
OS
Stellar 509 (Mi-509)
Android 4.4.2 (KitKat)
Stellar 520 (Mi-520)
Android 4.4.2 (KitKat)
Chipset
Stellar 509 (Mi-509)
Mediatek MT6582M (28 nm)
Stellar 520 (Mi-520)
Mediatek MT6582 (28 nm)
CPU
Stellar 509 (Mi-509)
Quad-core 1.3 GHz Cortex-A7
Stellar 520 (Mi-520)
Quad-core 1.3 GHz Cortex-A7
GPU
Stellar 509 (Mi-509)
Mali-400MP2
Stellar 520 (Mi-520)
Mali-400MP2
Card slot
Stellar 509 (Mi-509)
microSDHC (dedicated slot)
Stellar 520 (Mi-520)
microSDHC (dedicated slot)
Internal
Stellar 509 (Mi-509)
4GB 1GB RAM
Stellar 520 (Mi-520)
4GB 1GB RAM
Single
Stellar 509 (Mi-509)
8 MP, AF
Stellar 520 (Mi-520)
8 MP, AF
Features
Stellar 509 (Mi-509)
LED flash, panorama, HDR
Stellar 520 (Mi-520)
LED flash, panorama, HDR
Video
Stellar 509 (Mi-509)
720p@30fps
Stellar 520 (Mi-520)
Yes
Single
Stellar 509 (Mi-509)
2 MP
Stellar 520 (Mi-520)
2 MP
Video
Stellar 509 (Mi-509)
Stellar 520 (Mi-520)
Loudspeaker
Stellar 509 (Mi-509)
Yes
Stellar 520 (Mi-520)
Yes
3.5mm jack
Stellar 509 (Mi-509)
Yes
Stellar 520 (Mi-520)
Yes
WLAN
Stellar 509 (Mi-509)
Wi-Fi 802.11 a/b/g/n, dual-band, hotspot
Stellar 520 (Mi-520)
Wi-Fi 802.11 b/g/n, hotspot
Bluetooth
Stellar 509 (Mi-509)
3.0, A2DP
Stellar 520 (Mi-520)
3.0, A2DP, EDR
Positioning
Stellar 509 (Mi-509)
GPS
Stellar 520 (Mi-520)
GPS
NFC
Stellar 509 (Mi-509)
No
Stellar 520 (Mi-520)
No
Radio
Stellar 509 (Mi-509)
FM radio
Stellar 520 (Mi-520)
FM radio
USB
Stellar 509 (Mi-509)
microUSB 2.0
Stellar 520 (Mi-520)
microUSB 2.0
Sensors
Stellar 509 (Mi-509)
Accelerometer, proximity
Stellar 520 (Mi-520)
Accelerometer, proximity
Type
Stellar 509 (Mi-509)
Li-Ion 2000 mAh battery
Stellar 520 (Mi-520)
Li-Ion 2000 mAh battery
Stand-by
Stellar 509 (Mi-509)
Up to 170 h
Stellar 520 (Mi-520)
Up to 200 h
Talk time
Stellar 509 (Mi-509)
Up to 4 h 30 min
Stellar 520 (Mi-520)
Up to 4 h
Music play
Stellar 509 (Mi-509)
Up to 30 h
Stellar 520 (Mi-520)
Up to 20 h
Colors
Stellar 509 (Mi-509)
White
Stellar 520 (Mi-520)
Red/Yellow
SAR EU
Stellar 509 (Mi-509)
0.92 W/kg (head)
Stellar 520 (Mi-520)
0.82 W/kg (head)