Screen size
equal specs50 Helium 4G5.0"
50 Oxygen5.0"
Quick verdict
50 Oxygen leads the measured specs 7-2.
Measured wins
50 Helium 4G
2
spec wins
Ties
8
equal specs
50 Oxygen
7
spec wins
Overall winner
Screen size
equal specsTechnology
50 Helium 4G
GSM / HSPA / LTE
50 Oxygen
GSM / HSPA
2G bands
50 Helium 4G
GSM 850 / 900 / 1800 / 1900
50 Oxygen
GSM 850 / 900 / 1800 / 1900
3G bands
50 Helium 4G
HSDPA 900 / 2100 / 1800
50 Oxygen
HSDPA 900 / 2100
4G bands
50 Helium 4G
1, 3, 7, 8
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
equal specsStorage
Main 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
50 Oxygen
-
Speed
50 Helium 4G
HSPA 42.2/11.5 Mbps, LTE Cat4 150/50 Mbps
50 Oxygen
HSPA 42.2/11.5 Mbps
Announced
50 Helium 4G
2014. Released 2014
50 Oxygen
2013. Released 2013
Status
50 Helium 4G
Discontinued
50 Oxygen
Discontinued
Dimensions
50 Helium 4G
145 x 71.5 x 9 mm (5.71 x 2.81 x 0.35 in)
50 Oxygen
143 x 70.5 x 9.9 mm (5.63 x 2.78 x 0.39 in)
Weight
50 Helium 4G
160 g (5.64 oz)
50 Oxygen
130 g (4.59 oz)
SIM
50 Helium 4G
Micro-SIM
50 Oxygen
Micro-SIM
Type
50 Helium 4G
IPS LCD
50 Oxygen
IPS LCD
Size
50 Helium 4G
5.0 inches, 68.9 cm2 (~66.5% screen-to-body ratio)
50 Oxygen
5.0 inches, 68.9 cm2 (~68.4% screen-to-body ratio)
Resolution
50 Helium 4G
720 x 1280 pixels, 16:9 ratio (~294 ppi density)
50 Oxygen
1080 x 1920 pixels, 16:9 ratio (~441 ppi density)
OS
50 Helium 4G
Android 4.3 (Jelly Bean)
50 Oxygen
Android 4.2.2 (Jelly Bean)
Chipset
50 Helium 4G
Qualcomm MSM8926 Snapdragon 400 (28 nm)
50 Oxygen
Mediatek MT6589T (28 nm)
CPU
50 Helium 4G
Quad-core 1.2 GHz Cortex-A7
50 Oxygen
Quad-core 1.5 GHz Cortex-A7
GPU
50 Helium 4G
Adreno 305
50 Oxygen
PowerVR SGX544MP2
Card slot
50 Helium 4G
microSDHC (dedicated slot)
50 Oxygen
microSDHC (dedicated slot)
Internal
50 Helium 4G
8GB 1GB RAM
50 Oxygen
16GB 1GB RAM
Other
50 Helium 4G
eMMC 4.5
50 Oxygen
-
Single
50 Helium 4G
8 MP, AF
50 Oxygen
13.4 MP, AF
Features
50 Helium 4G
LED flash
50 Oxygen
LED flash
Video
50 Helium 4G
1080p@30fps
50 Oxygen
1080p@30fps
Single
50 Helium 4G
2 MP
50 Oxygen
5.3 MP
Video
50 Helium 4G
50 Oxygen
Features
50 Helium 4G
-
50 Oxygen
LED flash
Loudspeaker
50 Helium 4G
Yes
50 Oxygen
Yes
3.5mm jack
50 Helium 4G
Yes
50 Oxygen
Yes
WLAN
50 Helium 4G
Wi-Fi 802.11 b/g/n, hotspot, Wi-Fi Direct, DLNA
50 Oxygen
Wi-Fi 802.11 b/g/n, hotspot, Wi-Fi Direct, DLNA
Bluetooth
50 Helium 4G
4.0, A2DP, EDR, LE
50 Oxygen
4.0, A2DP, EDR
Positioning
50 Helium 4G
GPS, GLONASS
50 Oxygen
GPS
NFC
50 Helium 4G
No
50 Oxygen
No
Radio
50 Helium 4G
FM radio
50 Oxygen
Stereo FM radio
USB
50 Helium 4G
microUSB 2.0
50 Oxygen
microUSB 2.0 (MHL TV-out), OTG
Sensors
50 Helium 4G
Accelerometer, proximity, compass
50 Oxygen
Accelerometer, gyro, proximity, compass
Type
50 Helium 4G
Li-Ion 2000 mAh, removable
50 Oxygen
Li-Ion 2300 mAh, removable
Talk time
50 Helium 4G
Up to 10 h (2G) / Up to 8 h (3G)
50 Oxygen
-
Colors
50 Helium 4G
Black
50 Oxygen
Black
SAR EU
50 Helium 4G
0.37 W/kg (head) 0.89 W/kg (body)
50 Oxygen
0.22 W/kg (head) 0.56 W/kg (body)
Price
50 Helium 4G
About 280 EUR
50 Oxygen
-