Comparison of Vivo Y31 (2015) and ZTE Grand X2

Attribute	ZTE Grand X2 ×	Vivo Y31 (2015) ×
General
Brand	Zte	Vivo
Launch
Announced	2015-08-01	2015-09-01
Body
Width (mm)	9.3	8.4
Length (mm)	145	137.2
Height (mm)	72.8	68.8
Weight (g)	145	137
SIM	Micro-SIM	Dual SIM
Network
Technology	GSM HSPA LTE	GSM HSPA
2G bands	GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900
3G bands	HSDPA 850 / 1900 / 2100	HSDPA 850 / 900 / 2100
4G bands	2, 4, 5, 7, 12, 17	-
Speed	HSPA LTE	HSPA
Platform
OS	Android 5.1 (Lollipop)	Android 5.1 (Lollipop)
Chipset	Qualcomm MSM8926 Snapdragon 400 (28 nm)	Mediatek MT6580 (28 nm)
CPU	Quad-core 1.2 GHz Cortex-A7	Quad-core 1.3 GHz Cortex-A7
GPU	Adreno 305	Mali-400MP2
Memory
Card slot	microSDHC (dedicated slot)	microSDXC (dedicated slot)
Internal	16GB 2GB RAM	8GB 1GB RAM
Display
Size (in)	5	4.7
Resolution (px)	720 x 1280	720 x 1280
Protection	Corning Gorilla Glass 3	-
Display Type	IPS LCD	IPS LCD
Battery
Type	Li-Ion	Li-Po
Capcity (mAh)	2480	2100
Main Camera
Main Camera Type	Single	Single
Main Camera Properties	8 MP, AF	8 MP
Main Camera Video	1080p@30fps	720p@30fps
Main Camera Features	LED flash	LED flash, HDR
Selfie Camera
Selfie Camera Type	Single	Single
Selfie Camera Properties	2 MP	2 MP
Comms
WLAN	Wi-Fi 802.11 b/g/n, hotspot	Wi-Fi 802.11 b/g/n, hotspot
Bluetooth	4.0, A2DP	4.0, A2DP
GPS	+	+
NFC	-	-
Radio	No	FM radio
USB	microUSB 2.0	microUSB 2.0
Sound
Loudspeaker	+	+
3.5mm jack	+	+
Features
Sensors	Accelerometer proximity	Accelerometer compass proximity
Misc
Colors	Black	Black White
Models	-	Y31 Y31L
Stand-by (h)	288	-
Talk time (h)	Up to 7 h (3G)	-