Screen size
equal specs50 Cobalt5.0"
50d Helium 4G5.0"
Quick verdict
50d Helium 4G leads the measured specs 5-1.
Measured wins
50 Cobalt
1
spec wins
Ties
11
equal specs
50d Helium 4G
5
spec wins
Overall winner
Screen size
equal specsTechnology
50 Cobalt
GSM / HSPA / LTE
50d Helium 4G
GSM / HSPA / LTE
2G bands
50 Cobalt
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
50d Helium 4G
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
50 Cobalt
HSDPA 900 / 2100
50d Helium 4G
HSDPA 900 / 2100
4G bands
50 Cobalt
1, 7, 9, 20
Resolution
equal specsRefresh rate
Peak brightness
Pixel density
equal specsCPU speed
RAM
equal specsStorage
equal specsMain camera
Front 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
50d Helium 4G
3, 7, 20
Speed
50 Cobalt
HSPA 42.2/11.5 Mbps, LTE Cat4 150/50 Mbps
50d Helium 4G
HSPA 42.2/11.5 Mbps, LTE Cat4 150/50 Mbps
Announced
50 Cobalt
2016, January. Released 2016, March
50d Helium 4G
2015, July. Released 2015, July
Status
50 Cobalt
Discontinued
50d Helium 4G
Discontinued
Dimensions
50 Cobalt
141.5 x 71.5 x 9.2 mm (5.57 x 2.81 x 0.36 in)
50d Helium 4G
146 x 72.2 x 8.4 mm (5.75 x 2.84 x 0.33 in)
Weight
50 Cobalt
135 g (4.76 oz)
50d Helium 4G
154 g (5.43 oz)
SIM
50 Cobalt
Dual SIM (Micro-SIM, dual stand-by)
50d Helium 4G
Dual SIM (Micro-SIM, dual stand-by)
Type
50 Cobalt
IPS LCD
50d Helium 4G
IPS LCD
Size
50 Cobalt
5.0 inches, 68.9 cm2 (~68.1% screen-to-body ratio)
50d Helium 4G
5.0 inches, 68.9 cm2 (~65.4% screen-to-body ratio)
Resolution
50 Cobalt
720 x 1280 pixels, 16:9 ratio (~294 ppi density)
50d Helium 4G
720 x 1280 pixels, 16:9 ratio (~294 ppi density)
OS
50 Cobalt
Android 5.1.1 (Lollipop)
50d Helium 4G
Android 5.1 (Lollipop)
Chipset
50 Cobalt
Mediatek MT6735P (28 nm)
50d Helium 4G
Qualcomm MSM8916 Snapdragon 410 (28 nm)
CPU
50 Cobalt
Quad-core 1.0 GHz Cortex-A53
50d Helium 4G
Quad-core 1.2 GHz Cortex-A53
GPU
50 Cobalt
Mali-T720MP2
50d Helium 4G
Adreno 305
Card slot
50 Cobalt
microSDXC
50d Helium 4G
microSD
Internal
50 Cobalt
8GB 1GB RAM
50d Helium 4G
8GB 1GB RAM
Other
50 Cobalt
-
50d Helium 4G
eMMC 4.5
Single
50 Cobalt
8 MP, AF
50d Helium 4G
13 MP, AF
Features
50 Cobalt
LED flash, HDR, panorama
50d Helium 4G
LED flash
Video
50 Cobalt
720p@30fps
50d Helium 4G
1080p@30fps
Single
50 Cobalt
2 MP
50d Helium 4G
5 MP
Video
50 Cobalt
50d Helium 4G
Loudspeaker
50 Cobalt
Yes
50d Helium 4G
Yes
3.5mm jack
50 Cobalt
Yes
50d Helium 4G
Yes
WLAN
50 Cobalt
Wi-Fi 802.11 b/g/n, Wi-Fi Direct, DLNA, hotspot
50d Helium 4G
Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
Bluetooth
50 Cobalt
4.0, A2DP
50d Helium 4G
4.0, LE
Positioning
50 Cobalt
GPS
50d Helium 4G
GPS
NFC
50 Cobalt
No
50d Helium 4G
No
Radio
50 Cobalt
Stereo FM radio, RDS, recording
50d Helium 4G
FM radio
USB
50 Cobalt
microUSB 2.0
50d Helium 4G
microUSB 2.0
Sensors
50 Cobalt
Accelerometer, gyro, proximity
50d Helium 4G
Accelerometer, proximity, compass
Type
50 Cobalt
Li-Ion 2000 mAh, non-removable
50d Helium 4G
Li-Ion 2100 mAh, removable
Stand-by
50 Cobalt
Up to 330 h
50d Helium 4G
-
Talk time
50 Cobalt
Up to 20 h
50d Helium 4G
-
Colors
50 Cobalt
Blue/Gray
50d Helium 4G
Dark blue, Black
SAR EU
50 Cobalt
0.28 W/kg (head) 1.25 W/kg (body)
50d Helium 4G
-
Price
50 Cobalt
-
50d Helium 4G
About 140 EUR