| Local Name | Zenfone Selfie ZD551KL |
| Technology | GSM / HSPA / LTE |
| 4G Bands | LTE band 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800) - Global | LTE band 1(2100), 2(1900), 3(1800), 5(850), 6(900), 8(900), 9(1800), 18(800), 19(800), 28(700) - Taiwan | LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 17(700), 20(800) - USA | LTE band 1(210 |
| 3G Bands | HSDPA 850 / 900 / 1900 / 2100 |
| 2G Bands | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| Speed | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| GPRS | Yes |
| EDGE | Yes |
| Announced | 2015, June |
| Status | Available. Released 2015, August |
| Dimensions | 156.5 x 77.2 x 10.8 mm (6.16 x 3.04 x 0.43 in) |
| Weight | 170 g (6.00 oz) |
| SIM | Dual SIM (Micro-SIM, dual stand-by) |
| Display Type | IPS capacitive touchscreen, 16M colors |
| Screen Size | 5.5 inches (~68.3% screen-to-body ratio) |
| Resolution | 1080 x 1920 pixels (~403 ppi pixel density) |
| Mulitouch | Yes |
| Protection | Corning Gorilla Glass 4, oleophobic coating | Asus ZenUI |
| OS | Android OS, v5.0 (Lollipop), upgradable to v6.0 (Marshmallow) |
| Chipset | Qualcomm MSM8939 Snapdragon 615 |
| CPU | Octa-core (4x1.7 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53) |
| GPU | Adreno 405 |
| Card Slot | microSD, up to 256 GB (dedicated slot) |
| Internal Memory | 16/32 GB, 2/3 GB RAM |
| Primary Camera | 13 MP, f/2.0, 28mm, laser autofocus, dual-LED (dual tone) flash |
| Camera Features | 1/3" sensor size, geo-tagging, touch focus, face detection, panorama, HDR |
| Video | 1080p@30fps |
| Secondary Camera | 13 MP, f/2.2, 1080p, autofocus, dual-LED (dual tone) flash |
| Alert Types | Vibration; MP3, WAV ringtones |
| Loudspeaker | Yes |
| 3.5mm Jack | Yes |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi Direct, hotspot |
| Bluetooth | v4.0, A2DP, EDR |
| GPS | Yes, with A-GPS, GLONASS, BDS |
| Radio | FM radio, RDS |
| USB | microUSB v2.0, USB Host |
| Sensors | Accelerometer, gyro, proximity, compass |
| Messaging | SMS(threaded view), MMS, Email, Push Email, IM |
| Browser | HTML5 |
| Java | No |
| Features Summary | 5GB free lifetime ASUS WebStorage, MP3/WAV/eAAC+ player, MP4/H.264 player, Document viewer, Photo/video editor |
| Battery | Removable Li-Po 3000 mAh battery |
| Colors | Pure White, Chic Pink, Aqua Blue |