Asus Zenfone 4 ZE554KL smartphone specs & features are: Android Nougat operating sytem, octa-core 2.2GHz Qualcomm Snapdragon 630 processor, 6GB RAM and 64GB internal memory, 8MP front facing cameras and dual 12MP + 8MP main camera, Wi-Fi, Bluetooth and memory card slot which can be expanded to maximum 256GB with SIM slot 2. It has a battery capacity of 3300mAh, which can last you a full day.

Asus Zenfone 4 Selfie (ZD553KL) is a smartphone powered by Zen UI 4.0 based on Android 7.0 Nougat and 16MP Camera with dual tone LED flash. - 1.4GHz Octa-Core Snapdragon 430 Processor - 4GB RAM With 64GB ROM - 5.5 Inch HD IPS Display - Dual SIM - 16MP Rear Camera With Dual Tone LED Flash - Dual 20MP + 8MP Front Camera With LED Flash - Fingerprint Sensor - MicroSD/VoLTE/NFC/WiFi - 3000mAh Battery.

The ZenFone Selfie Pro opts for a 24 MP selfie shooter (though the sensor is technically a 12 MP one), accompanied with secondary 8-megapixels wide-angle sensor. Apart from that, the rest of the specs are decidedly mid-range: Snapdragon 625 with 4 GB of RAM and a 3,000 mAh battery.

6.2 inches, full HD+ 1080 OS: Android SIM: Nano SIM,Dual SIM, Dual Standby Storage: 64GB External Storage: up to 2TB Display Size: 6.2 inches Speed: HSPA, LTE-A Main Camera: 12 MP + unknown MP Dimensions: 153 x 7.85 x 75.65 mm

ASUS ZenFone 5Q (ZC600KL) 6" IPS LCD display Full HD+ resolution (2160x1080) Dual SIM Android 7.1 Nougat Snapdragon 630 quad-core processor 4GB RAM 64GB storage (expandable up to 2TB via dedicated memory card slot) Dual rear cameras (16MP & 8MP) Dual front cameras (20MP & 8MP) Fingeprint scanner 3300mAh battery

At just 1.2 mm thick, the ZenFone Go Bumper Case provides adequate protection without compromising the smartphone’s lightweight design. Its tactile thermoplastic polyurethane surface feels soft to the touch. Snap-on design protects the rear of your ZenFoneGo, while giving you full access its various ports.

OS : Android 8.0 Oreo (Go edition) Processor :Quad-core 1.4 GHz Cortex-A53 GPU :Adreno 308 Display :5.5” Full View 18:9 Display in 5” Body Camera Rear :13 MP (f/2.0), PDAF, LED flash Camera Front :5 MP (f/2.4), LED flash Internal Storage : 16GB ROM Memory : 2GB RAM Non-removable Li-Ion 3000 mAh battery microUSB 2.0 OTG Accelerometer, gyro, proximity, compass up to 512 GB (dedicated slot) Dual Sim Nano 4G Network , LTE Wifi

Display :6.3 inches OS :Android 8.1 (Oreo) Processor :Octa-core (4x1.8 GHz Kryo 250 Gold & 4x1.8 GHz Kryo 250 Silver) GPU :Adreno 506 Internal Storage : 32GB ROM Memory : 3GB RAM Camera Rear :13 MP, f/1.8, 1.12µm, PDAF2 MP, depth sensor Camera Front : 8 MP, f/2.0, 1.12µm Non-removable Li-Ion 4000 mAh battery