Screen size
45 Helium 4G4.5"
50b Helium 4GWinner: 5.0"+10%
Quick verdict
50b Helium 4G leads the measured specs 9-1.
Measured wins
45 Helium 4G
1
spec wins
Ties
7
equal specs
50b Helium 4G
9
spec wins
Overall winner
Screen size
Technology
45 Helium 4G
GSM / HSPA / LTE
50b Helium 4G
GSM / HSPA / LTE
2G bands
45 Helium 4G
GSM 850 / 900 / 1800 / 1900
50b Helium 4G
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
45 Helium 4G
HSDPA 900 / 2100 / 1800
50b Helium 4G
HSDPA 850 / 900 / 2100
4G bands
45 Helium 4G
1, 3, 7, 8
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
equal specsRAM
equal specsStorage
Main 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
50b Helium 4G
1, 3, 7, 20
Speed
45 Helium 4G
HSPA 42.2/11.5 Mbps, LTE Cat4 150/50 Mbps
50b Helium 4G
HSPA 42.2/11.5 Mbps, LTE Cat4 150/50 Mbps
Announced
45 Helium 4G
2014. Released 2014
50b Helium 4G
2014, October. Released 2014, December
Status
45 Helium 4G
Discontinued
50b Helium 4G
Discontinued
Dimensions
45 Helium 4G
135 x 67 x 9.8 mm (5.31 x 2.64 x 0.39 in)
50b Helium 4G
145 x 71.5 x 9 mm (5.71 x 2.81 x 0.35 in)
Weight
45 Helium 4G
140 g (4.94 oz)
50b Helium 4G
160 g (5.64 oz)
SIM
45 Helium 4G
Micro-SIM
50b Helium 4G
Dual SIM (Micro-SIM, dual stand-by)
Type
45 Helium 4G
IPS LCD
50b Helium 4G
IPS LCD
Size
45 Helium 4G
4.5 inches, 57.6 cm2 (~63.7% screen-to-body ratio)
50b Helium 4G
5.0 inches, 68.9 cm2 (~66.5% screen-to-body ratio)
Resolution
45 Helium 4G
480 x 800 pixels, 5:3 ratio (~207 ppi density)
50b Helium 4G
720 x 1280 pixels, 16:9 ratio (~294 ppi density)
OS
45 Helium 4G
Android 4.3 (Jelly Bean)
50b Helium 4G
Android 4.4.4 (KitKat)
Chipset
45 Helium 4G
Qualcomm MSM8926 Snapdragon 400 (28 nm)
50b Helium 4G
Qualcomm MSM8916 Snapdragon 410 (28 nm)
CPU
45 Helium 4G
Quad-core 1.2 GHz Cortex-A7
50b Helium 4G
Quad-core 1.2 GHz Cortex-A53
GPU
45 Helium 4G
Adreno 305
50b Helium 4G
Adreno 306
Card slot
45 Helium 4G
microSDHC (dedicated slot)
50b Helium 4G
microSDXC
Internal
45 Helium 4G
4GB 1GB RAM
50b Helium 4G
8GB 1GB RAM
Other
45 Helium 4G
eMMC 4.5
50b Helium 4G
eMMC 4.5
Single
45 Helium 4G
5 MP, AF
50b Helium 4G
8 MP, AF
Features
45 Helium 4G
LED flash
50b Helium 4G
LED flash
Video
45 Helium 4G
1080p@30fps
50b Helium 4G
1080p@30fps
Single
45 Helium 4G
VGA
50b Helium 4G
2 MP
Video
45 Helium 4G
50b Helium 4G
Loudspeaker
45 Helium 4G
Yes
50b Helium 4G
Yes
3.5mm jack
45 Helium 4G
Yes
50b Helium 4G
Yes
WLAN
45 Helium 4G
Wi-Fi 802.11 b/g/n, hotspot, Wi-Fi Direct, DLNA
50b Helium 4G
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth
45 Helium 4G
4.0, A2DP, EDR, LE
50b Helium 4G
4.0, A2DP
Positioning
45 Helium 4G
GPS, GLONASS
50b Helium 4G
GPS
NFC
45 Helium 4G
No
50b Helium 4G
Yes
Radio
45 Helium 4G
FM radio
50b Helium 4G
FM radio
USB
45 Helium 4G
microUSB 2.0
50b Helium 4G
microUSB 2.0
Sensors
45 Helium 4G
Accelerometer, proximity, compass
50b Helium 4G
Accelerometer, proximity, compass
Type
45 Helium 4G
Li-Ion 1850 mAh, removable
50b Helium 4G
Li-Po 2000 mAh, removable
Talk time
45 Helium 4G
Up to 9 h (2G) / Up to 7 h (3G)
50b Helium 4G
-
Colors
45 Helium 4G
Black
50b Helium 4G
Black
Price
45 Helium 4G
About 230 EUR
50b Helium 4G
About 150 EUR
SAR EU
45 Helium 4G
-
50b Helium 4G
0.40 W/kg (head) 0.71 W/kg (body)