Screen size
Astro 4.54.5"
Nitro 5.5Winner: 5.5"+18%
Quick verdict
Nitro 5.5 leads the measured specs 5-2.
Measured wins
Astro 4.5
2
spec wins
Ties
9
equal specs
Nitro 5.5
5
spec wins
Overall winner
Screen size
Technology
Astro 4.5
GSM / HSPA
Nitro 5.5
GSM / HSPA
2G bands
Astro 4.5
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
Nitro 5.5
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
Astro 4.5
HSDPA 850 / 1900 / 2100 , HSDPA 850 / 1700 / 1900
Nitro 5.5
HSDPA 850 / 1900 / 1700
Speed
Astro 4.5
HSPA 21.1/5.76 Mbps
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
equal specsRAM
Storage
equal specsMain camera
equal specsFront camera
Battery
Wired 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
Nitro 5.5
HSPA 21.1/5.76 Mbps
Announced
Astro 4.5
2015, July. Released 2015, July
Nitro 5.5
2015, January. Released 2015, February
Status
Astro 4.5
Discontinued
Nitro 5.5
Discontinued
Dimensions
Astro 4.5
134.3 x 66.7 x 10 mm (5.29 x 2.63 x 0.39 in)
Nitro 5.5
156.2 x 78.8 x 8.7 mm (6.15 x 3.10 x 0.34 in)
Weight
Astro 4.5
131 g (4.62 oz)
Nitro 5.5
174 g (6.14 oz)
SIM
Astro 4.5
Dual SIM (dual stand-by)
Nitro 5.5
Dual SIM, (Dual stand-by)
Type
Astro 4.5
TFT, 256K colors
Nitro 5.5
IPS LCD
Size
Astro 4.5
4.5 inches, 55.8 cm2 (~62.3% screen-to-body ratio)
Nitro 5.5
5.5 inches, 83.4 cm2 (~67.8% screen-to-body ratio)
Resolution
Astro 4.5
480 x 854 pixels, 16:9 ratio (~218 ppi density)
Nitro 5.5
540 x 960 pixels, 16:9 ratio (~200 ppi density)
OS
Astro 4.5
Android 4.4.2 (KitKat)
Nitro 5.5
Android 4.4.2 (KitKat)
Chipset
Astro 4.5
Mediatek MT6572M (28 nm)
Nitro 5.5
Mediatek MT6572 (28 nm)
CPU
Astro 4.5
Dual-core 1.2 GHz Cortex-A7
Nitro 5.5
Dual-core 1.2 GHz Cortex-A7
GPU
Astro 4.5
Mali-400
Nitro 5.5
Mali-400
Card slot
Astro 4.5
microSDHC
Nitro 5.5
microSDHC
Internal
Astro 4.5
4GB 512MB RAM
Nitro 5.5
4GB 512MB RAM
Single
Astro 4.5
8 MP
Nitro 5.5
8 MP, AF
Features
Astro 4.5
LED flash
Nitro 5.5
LED flash
Video
Astro 4.5
720p
Nitro 5.5
720p@30fps
Single
Astro 4.5
VGA
Nitro 5.5
2 MP
Video
Astro 4.5
Nitro 5.5
Loudspeaker
Astro 4.5
Yes
Nitro 5.5
Yes
3.5mm jack
Astro 4.5
Yes
Nitro 5.5
Yes
WLAN
Astro 4.5
Wi-Fi 802.11 b/g/n, hotspot
Nitro 5.5
Wi-Fi 802.11 b/g/n, hotspot
Bluetooth
Astro 4.5
4.0, A2DP
Nitro 5.5
4.0, A2DP
Positioning
Astro 4.5
GPS
Nitro 5.5
GPS
NFC
Astro 4.5
No
Nitro 5.5
No
Radio
Astro 4.5
Stereo FM radio
Nitro 5.5
Stereo FM radio
USB
Astro 4.5
microUSB 2.0
Nitro 5.5
microUSB 2.0
Sensors
Astro 4.5
Accelerometer, proximity
Nitro 5.5
Accelerometer, proximity
Type
Astro 4.5
Li-Ion 1700 mAh, removable
Nitro 5.5
Li-Ion 2200 mAh, removable
Stand-by
Astro 4.5
Up to 190 h (3G)
Nitro 5.5
Up to 350 h
Talk time
Astro 4.5
Up to 5 h (3G)
Nitro 5.5
Up to 14 h
Colors
Astro 4.5
White, Black, Gold, Gray, Blue
Nitro 5.5
White, Black, Blue, Pink, Yellow