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Sony Ericsson Xperia X2

Asus Zenfone 2 ZE551ML

Network
Technology	GSM / HSPA	GSM / HSPA / LTE
2G bands	GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network	HSDPA 900 / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100
	HSDPA 850 / 1900 / 2100 - XPERIA X2a	TD-SCDMA - China & India
4G Network		1, 2, 3, 4, 5, 8, 9, 18, 19, 28 - Taiwan
		1, 2, 3, 4, 5, 7, 8, 20 - Global
		1, 2, 3, 4, 5, 7, 8, 17, 20 - US
		1, 3, 38, 39, 40, 41 - China & India
Speed	HSPA 7.2/2 Mbps	HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps

Launch
Announced	2009, September. Released 2010, January	2015, January. Released 2015, March
Status	Discontinued	Discontinued

Body
Dimensions	110 x 54 x 16 mm (4.33 x 2.13 x 0.63 in)	152.5 x 77.2 x 10.9 mm (6.00 x 3.04 x 0.43 in)
Weight	155 g (5.47 oz)	170 g (6.00 oz)
Keyboard	QWERTY
Build		Glass front (Gorilla Glass 3), plastic back, plastic frame
SIM	Mini-SIM	Dual SIM (Micro-SIM, dual stand-by)
	Optical trackpad

Display
Type	TFT resistive touchscreen, 65K colors	IPS LCD
Size	3.2 inches, 29.1 cm2 (~49.1% screen-to-body ratio)	5.5 inches, 83.4 cm2 (~70.8% screen-to-body ratio)
Resolution	480 x 800 pixels, 5:3 ratio (~292 ppi density)	1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
Protection		Corning Gorilla Glass 3
	XPERIA panels UI

Platform
OS	Microsoft Windows Mobile 6.5/6.5.2 Professional	Android 5.0 (Lollipop), upgradable to 6.0 (Marshmallow)
Chipset	Qualcomm MSM7200A	Intel Atom Z3580 (4 GB RAM model) Intel Atom Z3560 (2 GB RAM model)
CPU	528 MHz ARM 11	Quad-core 2.3 GHz (4 GB RAM model) Quad-core 1.8 GHz (2 GB RAM model)
GPU	Adreno 130	PowerVR G6430

Memory
Card slot	microSDHC (dedicated slot)	microSDXC (dedicated slot)
Internal	110MB 256MB RAM 512MB ROM	16GB 2GB RAM, 32GB 2GB RAM, 32GB 4GB RAM, 64GB 4GB RAM, 128GB 4GB RAM

Main Camera
Modules	8 MP, AF	13 MP, f/2.0, AF
Features	LED flash	Dual-LED dual-tone flash, panorama, HDR
Video	w480p@30fps	1080p@30fps

Selfie Camera
Modules	Videocall, via SW update	5 MP, f/2.0
Video

Sound
Loudspeaker	Yes, with stereo speakers	Yes
3.5mm jack	Yes	Yes

Comms
WLAN	Wi-Fi 802.11b/g, DLNA	Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi Direct, hotspot
Bluetooth	2.1, A2DP	4.0, A2DP, EDR
Positioning	GPS, A-GPS	GPS, GLONASS
NFC		Yes
Infrared port	No	No
Radio	Stereo FM (via software update)	FM radio, RDS
USB	microUSB 2.0	microUSB 2.0, OTG

Features
Sensors	Accelerometer	Accelerometer, gyro, proximity, compass
	MP3/WAV/eAAC+/WMA player MP4/Xvid/WMV9/H.264 player TV Out YouTube application Pocket Office Photo editor Organizer Voice memo/dial Predictive text input

Battery
Type	Removable Li-Po 1500 mAh battery (BST-41)	Li-Po 3000 mAh, non-removable
Charging		18W wired, 60% in 40 min (advertised)
Stand-by	Up to 500 h (2G) / Up to 640 h (3G)
Talk time	Up to 10 h (2G) / Up to 6 h (3G)
Music play	Up to 20 h

Misc
Colors	Elegant Black, Modern Silver	Osmium Black, Sheer Gold, Glacier Gray, Glamor Red, Ceramic White
SAR EU	0.90 W/kg (head)	0.35 W/kg (head)
Models		Z00AD, Z00A
Price	About 140 EUR	About 300 EUR

Tests
Performance		Basemark OS II 2.0: 1090 Basemark X: 12565
Camera	Compare PHOTO / Compare VIDEO
Loudspeaker	Voice 66dB / Noise 69dB / Ring 65dB	Voice 62dB / Noise 61dB / Ring 67dB
Audio quality	Noise -81.3dB / Crosstalk -93.1dB
Battery (old)		Endurance rating 59h