Screen size
50 Cobalt5.0"
55 Cobalt PlusWinner: 5.5"+9.1%
Quick verdict
55 Cobalt Plus leads the measured specs 7-1.
Measured wins
50 Cobalt
1
spec wins
Ties
9
equal specs
55 Cobalt Plus
7
spec wins
Overall winner
Screen size
Technology
50 Cobalt
GSM / HSPA / LTE
55 Cobalt Plus
GSM / HSPA / LTE
2G bands
50 Cobalt
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
55 Cobalt Plus
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
50 Cobalt
HSDPA 900 / 2100
55 Cobalt Plus
HSDPA 900 / 2100
4G bands
50 Cobalt
1, 7, 9, 20
Resolution
equal specsRefresh rate
Peak brightness
Pixel density
CPU speed
equal specsRAM
Storage
Main camera
Front camera
equal specsBattery
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
55 Cobalt Plus
1, 7, 9, 20
Speed
50 Cobalt
HSPA 42.2/11.5 Mbps, LTE Cat4 150/50 Mbps
55 Cobalt Plus
HSPA 42.2/11.5 Mbps, LTE Cat4 150/50 Mbps
Announced
50 Cobalt
2016, January. Released 2016, March
55 Cobalt Plus
2016, January. Released 2016, March
Status
50 Cobalt
Discontinued
55 Cobalt Plus
Discontinued
Dimensions
50 Cobalt
141.5 x 71.5 x 9.2 mm (5.57 x 2.81 x 0.36 in)
55 Cobalt Plus
152.5 x 77 x 8.3 mm (6.00 x 3.03 x 0.33 in)
Weight
50 Cobalt
135 g (4.76 oz)
55 Cobalt Plus
130 g (4.59 oz)
SIM
50 Cobalt
Dual SIM (Micro-SIM, dual stand-by)
55 Cobalt Plus
Dual SIM (Micro-SIM, dual stand-by)
Type
50 Cobalt
IPS LCD
55 Cobalt Plus
IPS LCD
Size
50 Cobalt
5.0 inches, 68.9 cm2 (~68.1% screen-to-body ratio)
55 Cobalt Plus
5.5 inches, 83.4 cm2 (~71.0% screen-to-body ratio)
Resolution
50 Cobalt
720 x 1280 pixels, 16:9 ratio (~294 ppi density)
55 Cobalt Plus
720 x 1280 pixels, 16:9 ratio (~267 ppi density)
OS
50 Cobalt
Android 5.1.1 (Lollipop)
55 Cobalt Plus
Android 5.1.1 (Lollipop)
Chipset
50 Cobalt
Mediatek MT6735P (28 nm)
55 Cobalt Plus
Mediatek MT6735P (28 nm)
CPU
50 Cobalt
Quad-core 1.0 GHz Cortex-A53
55 Cobalt Plus
Quad-core 1.0 GHz Cortex-A53
GPU
50 Cobalt
Mali-T720MP2
55 Cobalt Plus
Mali-T720MP2
Card slot
50 Cobalt
microSDXC
55 Cobalt Plus
microSDXC
Internal
50 Cobalt
8GB 1GB RAM
55 Cobalt Plus
16GB 2GB RAM
Single
50 Cobalt
8 MP, AF
55 Cobalt Plus
13 MP, AF
Features
50 Cobalt
LED flash, HDR, panorama
55 Cobalt Plus
LED flash, HDR, panorama
Video
50 Cobalt
720p@30fps
55 Cobalt Plus
720p@30fps
Single
50 Cobalt
2 MP
55 Cobalt Plus
2 MP
Video
50 Cobalt
55 Cobalt Plus
Loudspeaker
50 Cobalt
Yes
55 Cobalt Plus
Yes
3.5mm jack
50 Cobalt
Yes
55 Cobalt Plus
Yes
WLAN
50 Cobalt
Wi-Fi 802.11 b/g/n, Wi-Fi Direct, DLNA, hotspot
55 Cobalt Plus
Wi-Fi 802.11 b/g/n, Wi-Fi Direct, DLNA, hotspot
Bluetooth
50 Cobalt
4.0, A2DP
55 Cobalt Plus
4.0, A2DP
Positioning
50 Cobalt
GPS
55 Cobalt Plus
GPS
NFC
50 Cobalt
No
55 Cobalt Plus
No
Radio
50 Cobalt
Stereo FM radio, RDS, recording
55 Cobalt Plus
Stereo FM radio, RDS, recording
USB
50 Cobalt
microUSB 2.0
55 Cobalt Plus
microUSB 2.0
Sensors
50 Cobalt
Accelerometer, gyro, proximity
55 Cobalt Plus
Accelerometer, gyro, proximity
Type
50 Cobalt
Li-Ion 2000 mAh, non-removable
55 Cobalt Plus
Li-Ion 2700 mAh, non-removable
Stand-by
50 Cobalt
Up to 330 h
55 Cobalt Plus
Up to 450 h
Talk time
50 Cobalt
Up to 20 h
55 Cobalt Plus
Up to 27 h
Colors
50 Cobalt
Blue/Gray
55 Cobalt Plus
Blue/Gray
SAR EU
50 Cobalt
0.28 W/kg (head) 1.25 W/kg (body)
55 Cobalt Plus
0.25 W/kg (head) 1.28 W/kg (body)