Screen size
equal specs50b Helium 4G5.0"
50d Helium 4G5.0"
Quick verdict
50d Helium 4G leads the measured specs 5-1.
Measured wins
50b Helium 4G
1
spec wins
Ties
11
equal specs
50d Helium 4G
5
spec wins
Overall winner
Screen size
equal specsTechnology
50b Helium 4G
GSM / HSPA / LTE
50d Helium 4G
GSM / HSPA / LTE
2G bands
50b Helium 4G
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
50d Helium 4G
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
50b Helium 4G
HSDPA 850 / 900 / 2100
50d Helium 4G
HSDPA 900 / 2100
4G bands
50b Helium 4G
1, 3, 7, 20
Resolution
equal specsRefresh rate
Peak brightness
Pixel density
equal specsCPU speed
equal specsRAM
equal specsStorage
equal specsMain camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
equal specsUSB
equal specs5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
50d Helium 4G
3, 7, 20
Speed
50b Helium 4G
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
50b Helium 4G
2014, October. Released 2014, December
50d Helium 4G
2015, July. Released 2015, July
Status
50b Helium 4G
Discontinued
50d Helium 4G
Discontinued
Dimensions
50b Helium 4G
145 x 71.5 x 9 mm (5.71 x 2.81 x 0.35 in)
50d Helium 4G
146 x 72.2 x 8.4 mm (5.75 x 2.84 x 0.33 in)
Weight
50b Helium 4G
160 g (5.64 oz)
50d Helium 4G
154 g (5.43 oz)
SIM
50b Helium 4G
Dual SIM (Micro-SIM, dual stand-by)
50d Helium 4G
Dual SIM (Micro-SIM, dual stand-by)
Type
50b Helium 4G
IPS LCD
50d Helium 4G
IPS LCD
Size
50b Helium 4G
5.0 inches, 68.9 cm2 (~66.5% screen-to-body ratio)
50d Helium 4G
5.0 inches, 68.9 cm2 (~65.4% screen-to-body ratio)
Resolution
50b Helium 4G
720 x 1280 pixels, 16:9 ratio (~294 ppi density)
50d Helium 4G
720 x 1280 pixels, 16:9 ratio (~294 ppi density)
OS
50b Helium 4G
Android 4.4.4 (KitKat)
50d Helium 4G
Android 5.1 (Lollipop)
Chipset
50b Helium 4G
Qualcomm MSM8916 Snapdragon 410 (28 nm)
50d Helium 4G
Qualcomm MSM8916 Snapdragon 410 (28 nm)
CPU
50b Helium 4G
Quad-core 1.2 GHz Cortex-A53
50d Helium 4G
Quad-core 1.2 GHz Cortex-A53
GPU
50b Helium 4G
Adreno 306
50d Helium 4G
Adreno 305
Card slot
50b Helium 4G
microSDXC
50d Helium 4G
microSD
Internal
50b Helium 4G
8GB 1GB RAM
50d Helium 4G
8GB 1GB RAM
Other
50b Helium 4G
eMMC 4.5
50d Helium 4G
eMMC 4.5
Single
50b Helium 4G
8 MP, AF
50d Helium 4G
13 MP, AF
Features
50b Helium 4G
LED flash
50d Helium 4G
LED flash
Video
50b Helium 4G
1080p@30fps
50d Helium 4G
1080p@30fps
Single
50b Helium 4G
2 MP
50d Helium 4G
5 MP
Video
50b Helium 4G
50d Helium 4G
Loudspeaker
50b Helium 4G
Yes
50d Helium 4G
Yes
3.5mm jack
50b Helium 4G
Yes
50d Helium 4G
Yes
WLAN
50b Helium 4G
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
50d Helium 4G
Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
Bluetooth
50b Helium 4G
4.0, A2DP
50d Helium 4G
4.0, LE
Positioning
50b Helium 4G
GPS
50d Helium 4G
GPS
NFC
50b Helium 4G
Yes
50d Helium 4G
No
Radio
50b Helium 4G
FM radio
50d Helium 4G
FM radio
USB
50b Helium 4G
microUSB 2.0
50d Helium 4G
microUSB 2.0
Sensors
50b Helium 4G
Accelerometer, proximity, compass
50d Helium 4G
Accelerometer, proximity, compass
Type
50b Helium 4G
Li-Po 2000 mAh, removable
50d Helium 4G
Li-Ion 2100 mAh, removable
Colors
50b Helium 4G
Black
50d Helium 4G
Dark blue, Black
SAR EU
50b Helium 4G
0.40 W/kg (head) 0.71 W/kg (body)
50d Helium 4G
-
Price
50b Helium 4G
About 150 EUR
50d Helium 4G
About 140 EUR