For additional help, check out the ASUS ZenFone 2 Troubleshooting page.
Background and Identification
The ASUS ZenFone 2 (ZE551ML) was the 2nd generation ZenFone by ASUS. It was released March 2015; and comes in: black, white, red, gray, or gold. The ZenFone 2 features 4G LTE, a 5 megapixel front camera, a 13 megapixel back camera, and a 5.5 inch 1920x1080 FHD display.
The ZenFone 2 has faced no known manufacturer recalls and no known failure modes.
The ZenFone 2 is very similar to the ZenFone Zoom since they are both from the same generation; however, the ZenFone Zoom was released after the ZenFone 2 and is a little bit bigger with a larger storage capacity.
Platform: Android 5.0 (Lollipop)
Dimensions: 77.2 x 152.5 x 3.9 mm (WxDxH) ~ 10.9 mm
Weight: 170 g
CPU: Intel® Atom™ Quad Core Z3580 (2.3GHz), PowerVR G6430, with OpenGL 3.0 support; Intel® Atom™ Quad Core Z3560 (1.8GHz), PowerVR G6430, with OpenGL 3.0 support
Memory: 2GB/4GB LPDDR3 RAM
Storage: 16GB/64GB eMMC Flash; 5GB free lifetime ASUS WebStorage
Memory Slot: MicroSD card (up to 64 GB)
Modem: Intel 7262 + Intel 2230
Connectivity Technology: WLAN 802.11 ac
Features: USB, Bluetooth V4.0, NFC, Dual Micro SIM card
Data Rate: HSPA+ (UL 5.76 / DL 42 Mbps); DC-HSPA+ (UL 5.76 / DL 42 Mbps); LTE Cat4 (UL 50 / DL 150 Mbps)
WCDMA : 850MHz/900MHz/1900MHz/2100MHz
TD-SCDMA: (CN/IN version Only) 1900 ~ 2100
4G : LTE Bands (TW version)2100MHz(1)/
Display: 5.5inches, Full HD 1920x1080,IPS; Corning® Gorilla® Glass 3
Battery: 3000 mAh Li-Polymer
Camera: Front 5 Mega-Pixel, Fix Focus, Wide View, PixelMaster; Rear 13 Mega-Pixel, Auto Focus, PixelMaster
Sensor: G-Sensor/E Compass/Gyroscope/ Proximity/Ambient Light Sensor