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Compare the smartphones with respect to their specifications- stuffcompare.com
Model Name Asus Zenfone Zoom ZX551ML    
Announced 2015, September    
SIM Type Single SIM    
SIM Size Micro SIM    
Color in Available Pure Black, Ceramic White    
Hybrid Sim Slot No    
Type IPS LCD Capacitive Touchscreen    
Size 5.5 inches (--66.6% screen-to-body ratio)    
Resolution 1080 x 1920 pixels (--401 ppi pixel density)    
Display colors 16M colors    
Multitouch Yes    
Protection Corning Gorilla Glass 4    
Other feature ASUS ZenUI    
Network & Connectivity
Network Technology GSM / HSPA / LTE    
2G GSM 850 / 900 / 1800 / 1900    
3G HSDPA 850 / 900 / 1900 / 2100    
4G LTE band 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 9(1800), 18(800), 19(800), 28(700)    
SIM 1 -    
SIM 2 -    
Speed HSPA 42.2/5.76 Mbps, LTE Cat4+ 250/50 Mbps    
GPRS Yes    
EDGE Yes    
WLAN Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Hotspot    
Bluetooth v4.1, A2DP, EDR    
NFC No    
Infrared No    
Radio No    
USB microUSB v2.0    
Camera Description
Primary 13 MP, f/2.7-4.8, 28-84mm (3x optical zoom), Laser autofocus, OIS, Dual-LED flash    
Features Geo-tagging, Touch focus, Face detection, Panorama, HDR    
Video Recording Yes    
Secondary 5 MP, f/2.0    
Frame Rate [email protected]    
RAM Size 4 GB    
Internal 32/64/128 GB, 5GB free lifetime ASUS WebStorage    
Expandable Storage MicroSD card (up to 256 GB)    
Card slot microSD    
Operating System
Operating System Android OS, v5.0 (Lollipop), upgradable to v6.0 (Marshmallow)    
Processor Brand Intel Atom Z3590    
Processor Speed 2.5 GHz    
Core Quad-core    
GPU PowerVR G6430    
Operating Frequency --    
Sensors Accelerometer, Gyro, Proximity, Compass    
Multimedia & Sound
Audio Formats MP3/WAV/eAAC+ player    
Video Formats MP4/H.264 player    
Alert Types Vibration; MP3, WAV ringtones    
Loudspeaker Yes    
3.5mm jack Yes    
Battery Capacity 3000 mAh    
Battery Type Li-Po    
Removable Battery No    
Fast battery charging 60% in 40 min    
Battery Backup -    
Other Features
Fingerprint Sensor No    
Java No    
Messaging SMS(threaded view), MMS, Email, Push Email, IM    
Browse Type HTML5    
Others -    
Dimension & Weight
Width 78.8 mm    
Height 158.9 mm    
Depth 12 mm    
Weight 185 G