Screen size
50 Graphite5.0"
55b CobaltWinner: 5.5"+9.1%
Quick verdict
50 Graphite leads the measured specs 5-3.
Measured wins
50 Graphite
5
spec wins
Overall winner
Ties
9
equal specs
55b Cobalt
3
spec wins
Screen size
Technology
50 Graphite
GSM / HSPA / LTE
55b Cobalt
GSM / HSPA / LTE
2G bands
50 Graphite
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
55b Cobalt
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
50 Graphite
HSDPA 900 / 2100
55b Cobalt
HSDPA 900 / 2100
4G bands
50 Graphite
LTE 800 / 1800 / 2100 / 2600
Resolution
equal specsRefresh rate
Peak brightness
Pixel density
CPU speed
RAM
equal specsStorage
equal specsMain camera
equal specsFront camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
55b Cobalt
LTE 800 / 1800 / 2100 / 2600
Speed
50 Graphite
HSPA 42.2/11.5 Mbps, LTE Cat4 150/50 Mbps
55b Cobalt
HSPA 42.2/11.5 Mbps, LTE Cat4 150/50 Mbps
Announced
50 Graphite
2017, February. Released 2017, June
55b Cobalt
2017, January. Released 2017, January
Status
50 Graphite
Discontinued
55b Cobalt
Discontinued
Dimensions
50 Graphite
144 x 72.7 x 8.9 mm (5.67 x 2.86 x 0.35 in)
55b Cobalt
155 x 79 x 0 mm (6.10 x 3.11 x 0.0 in)
Weight
50 Graphite
160 g (5.64 oz)
55b Cobalt
188 g (6.63 oz)
SIM
50 Graphite
Dual SIM
55b Cobalt
Dual SIM (Mini-SIM, dual stand-by)
Type
50 Graphite
IPS LCD
55b Cobalt
IPS LCD
Size
50 Graphite
5.0 inches, 68.9 cm2 (~65.8% screen-to-body ratio)
55b Cobalt
5.5 inches, 83.4 cm2 (~68.1% screen-to-body ratio)
Resolution
50 Graphite
720 x 1280 pixels, 16:9 ratio (~294 ppi density)
55b Cobalt
720 x 1280 pixels, 16:9 ratio (~267 ppi density)
OS
50 Graphite
Android 7.0 (Nougat)
55b Cobalt
Android 6.0 (Marshmallow)
Chipset
50 Graphite
Mediatek MT6737 (28 nm)
55b Cobalt
Qualcomm MSM8909 Snapdragon 210 (28 nm)
CPU
50 Graphite
Quad-core 1.5 GHz Cortex-A53
55b Cobalt
Quad-core 1.1 GHz
GPU
50 Graphite
Mali-T720MP2
55b Cobalt
Adreno 304
Card slot
50 Graphite
microSDXC
55b Cobalt
microSDXC
Internal
50 Graphite
16GB 1GB RAM
55b Cobalt
16GB 1GB RAM, 32GB 2GB RAM
Other
50 Graphite
eMMC 5.0
55b Cobalt
eMMC 4.5
Dual
50 Graphite
13 MP, AF Auxiliary lens
55b Cobalt
-
Features
50 Graphite
LED flash, HDR, panorama
55b Cobalt
LED flash, HDR, panorama
Video
50 Graphite
1080p@30fps
55b Cobalt
720p@30fps
Single
50 Graphite
-
55b Cobalt
13 MP, AF
Single
50 Graphite
5 MP
55b Cobalt
2 MP
Video
50 Graphite
55b Cobalt
Loudspeaker
50 Graphite
Yes
55b Cobalt
Yes
3.5mm jack
50 Graphite
Yes
55b Cobalt
Yes
WLAN
50 Graphite
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
55b Cobalt
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth
50 Graphite
4.1, A2DP, LE
55b Cobalt
4.0, A2DP
Positioning
50 Graphite
GPS
55b Cobalt
GPS
NFC
50 Graphite
No
55b Cobalt
No
Radio
50 Graphite
FM radio
55b Cobalt
FM radio
USB
50 Graphite
microUSB 2.0, OTG
55b Cobalt
microUSB 2.0
Sensors
50 Graphite
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
55b Cobalt
Fingerprint (rear-mounted), accelerometer, proximity
Type
50 Graphite
Li-Ion 2400 mAh, non-removable
55b Cobalt
Li-Ion 2600 mAh, removable
Colors
50 Graphite
Black
55b Cobalt
Gray
Price
50 Graphite
About 130 EUR
55b Cobalt
-
SAR EU
50 Graphite
-
55b Cobalt
0.98 W/kg (head) 1.76 W/kg (body)