Phone Comparison - Sony Xperia Z Ultra vs ZTE Nubia X6 vs Microsoft Lumia 640 XL LTE Dual SIM

general General Info

Manufacturer Sony ZTE Microsoft
Announced June 2013 March 2014 March 2015
Status Available - July 2013 Coming Soon - April 2014 Available - April 2015
Price - - Rs. 14,999 ($220.57) [Similarly Priced]
Colors Black, White, Purple White, Gold Matte cyan, Orange, Black, Matte white, Glossy white
Form Factor Candybar Candybar Candybar
Dimension 179.4 x 92.2 x 6.5 mm
(7.06 x 3.63 x 0.26 in)
7.9 mm thickness
(0.31 in thickness)
157.9 x 81.5 x 9 mm
(6.22 x 3.21 x 0.35 in)
Weight 212 g (7.48 oz) 215 g (7.58 oz) 171 g (6.03 oz)
2G Network GSM 850 / 900 / 1800 / 1900 - All Versions GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network HSDPA 850 / 900 / 1700 / 1900 / 2100 - All Versions HSDPA HSDPA 850 / 900 / 1900 / 2100
4G Network LTE 700 / 850 / 1700 / 1900 / 2100 / 2600 / 900 - C6806 LTE LTE
Messaging SMS, MMS, Push Mail, EMail, IM SMS, MMS, Push Mail, EMail, IM SMS, MMS, Push Mail, EMail, IM
Build Features - IP58 Certified - Dust and Water-proof
- Water Resistant up to 1 Meter and 30 Minutes
- -

hardware Hardware and OS

OS Android OS, v4.2 (Jelly Bean) Android OS Microsoft Windows Phone 8.1 with Lumia Denim
Processor Quad-core 2.2 GHz Krait 400, Qualcomm MSM8274/MSM8974 Snapdragon 800 Quad-core 2.3 GHz Krait 400 / Quad-core 2.5 GHz Krait 400, Qualcomm MSM8974AB/ MSM8974AC Snapdragon 801 Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400
GPU Adreno 330 Adreno 330 Adreno 305
RAM 2 GB 2 GB 1 GB
Internal Memory 16 GB 32/64 GB 8 GB
External Memory microSD, up to 64 GB No microSD, up to 128 GB

display Display

Type Capacitive touchscreen IPS LCD capacitive touchscreen IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display
Colors 16M colors 16M colors 16M colors
Size 6.44 inches 6.44 inches 5.7 inches
Resolution 1080 x 1920 pixels (342 ppi) 1080 x 1920 pixels (342 ppi) 720 x 1280 pixels (259 ppi)
Screen-to-Body Ratio 69.15% - 68.88%
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes yes
Radio Stereo FM radio with RDS - FM radio
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes yes

camera Camera

Rear Camera 8 MP, 3264 x 2448 pixels 13 MP, 4128 x 3096 pixels 13 MP, 4128 x 3096 pixels
Flash LED flash optical image stabil LED Flash
Features Auto focus, Geo-tagging, Touch Focus, Face Detection, Image Stabilization, HDR, Sweep Panorama Geo-tagging, Touch Focus, Face Detection Carl Zeiss Optics, 1/3'' sensor size
Video Yes, 1080p@30fps, video stabilization, HDR Yes, 1080p@30fps 1080p@30fps
Front Camera Yes, 2 MP, 1080p@30fps [Similar] Yes, 13 MP, 4128 x 3096 pixels, 1080p@30 [Similar] 5 MP, 1080p [Similar]

connectivity Connectivity and Data Rate

GPRS Up to 107 kbps Yes Yes
Edge Up to 296 kbps Yes Yes
3G HSDPA, 42 Mbps; HSUPA, 5.8 Mbps; LTE, Cat4, 50 Mbps UL, 150 Mbps DL HSDPA, HSUPA, LTE HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Bluetooth Yes, v4.0 with A2DP Yes, v4.0 with A2DP v4.0, A2DP
Wi-Fi Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot Wi-Fi 802.11 b/g/n, DLNA, hotspot
USB Yes, microUSB v2.0 (MHL), USB On-the-go Yes, microUSB v3.0, USB On-the-go microUSB v2.0
GPS Yes, with A-GPS support and GLONASS Yes, with A-GPS support Yes, with A-GPS, GLONASS, Beidou
Browser HTML5 HTML5 HTML5

memory User Memory

Internal 16 GB, 2 GB RAM 32/64 GB, 2 GB RAM
128 GB, 3 GB RAM
8 GB, 1 GB RAM
Expandable Storage microSD, up to 64 GB No microSD, up to 128 GB
USB OTG Supported Supported -

Apps Sensors

Fingerprint fingerprint not supported fingerprint not supported fingerprint not supported
Proximity Sensor proximity sensor present proximity sensor present proximity sensor present
Accelerometer Sensor accelerometer sensor present accelerometer sensor present accelerometer sensor present
NFC NFC supported NFC supported NFC supported

battery Battery

Type Non-removable Li-Ion Battery Non-removable Li-ion Battery Li-Ion Battery
Capacity 3050 mAh 4250 mAh 3000 mAh
Stand by Up to 790 h (2G)
Up to 820 h (3G)
- Up to 936 h (2G)
Up to 936 h (3G)
Talk Time Up to 14 h (2G)
Up to 16 h (3G)
- Up to 31 h 20 min (2G)
Up to 23 h 40 min (3G)