Ark S503 (New) vs ZTE nubia Z17s

Ark S503 (New)

ZTE nubia Z17s

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900; CDMA 800 & TD-SCDMA
3G network

HSDPA 900, 2100

HSDPA 850, 900, 1900, 2100; CDMA2000 1xEV-DO
4G network

-

LTE frequency band 1(2100), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 20(800), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)
HSDPA speed

-

42.2 Mbps
HSUPA speed

-

5.76 Mbps
LTE-A speed

-

LTE-A, (3CA) Cat9, 450 Mbps download, 50 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Plastic

Front/back glass & metal frame
SIM

Dual SIM (Micro-SIM, dual SIM stand-by)

Dual SIM (Nano-SIM, dual stand-by)
Height

152 mm

147.5 mm
Width

73 mm

72.7 mm
Thickness

7.8 mm

8.5 mm
Weight

157 g

170 g
Colors

Black

Aurora Blue, Black Gold

Main camera
Camera type

Single

Dual
Main camera

5 MP

12 MP, f/1.8 , 2x optical zoom
23 MP, f/2.0
Primary camera resolution

2592 x 1944 pixels

-
Primary camera video

720p@30fps

2160p@30fps
Primary camera Autofocus

-

phase detection autofocus
Primary camera flash

dual LED flash

duad-LED (dual tone) flash
Camera features

Autofocus, continuous shooting, digital zoom, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode

1.4 µm pixel size, 1/2.55" sensor size, HDR, face detection, geo-tagging, panorama, touch focus

Connectivity
WLAN

Wi-Fi 802.11b, 802.11g, 802.11n

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

-

Yes
WLAN WiFi Dual Band

-

Yes
WLAN DLNA

-

Yes
USB

microUSB 2.0

Type-C 1.0 reversible connector
USB On-The-Go

-

Yes
Bluetooth

v4.0

v4.1
Bluetooth A2DP

Yes

Yes
bluetooth LE

-

Yes
Infrared

-

Yes
NFC

-

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

-

Yes
BDS

-

Yes

Features
Messaging SMS

-

SMS(threaded view)
Messaging MMS

-

MMS
Messaging Email

-

Email
Messaging IM

-

IM
Messaging Push Email

-

Push Email
Java

-

No
Sensors

Accelerometer, proximity, light

Fingerprint (rear-mounted), accelerometer, compass, gyro, proximity