| Local Name | ROG Phone II ZS660KL |
| Additional Information | Also known as Asus ROG Phone2 ZS660KL |
| Technology | GSM / HSPA / LTE |
| 4G Bands | 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 28, 29, 32, 34, 38, 39, 40, 41, 46 |
| 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-A (5CA) Cat18 (Cat20 Ultimate edition) 1200/150 Mbps |
| Announced | 2019, July 22 |
| Status | Available. Released 2019, September |
| Dimensions | 171 x 77.6 x 9.5 mm (6.73 x 3.06 x 0.37 in) |
| Weight | 240 g (8.47 oz) |
| Build | Glass front (Gorilla Glass 6), glass back (Gorilla Glass 3), aluminum frame |
| SIM | Dual SIM (Nano-SIM, dual stand-by) |
| Body | RGB light panel (on the back) |
| Display Type | Li-Po 6000 mAh, non-removable |
| Screen Size | 6.59 inches, 106.6 cm2 (~80.3% screen-to-body ratio) |
| Resolution | 1080 x 2340 pixels, 19.5:9 ratio (~391 ppi density) |
| Protection | Corning Gorilla Glass 6 |
| OS | Android 9.0 (Pie), ROG UI |
| Chipset | Qualcomm SM8150 Snapdragon 855+ (7 nm) |
| CPU | Octa-core (1x2.96 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485) |
| GPU | Adreno 640 (700 MHz) |
| Card Slot | No |
| Internal Memory | 128GB 8GB RAM, 256GB 12GB RAM, 512GB 12GB RAM, 1TB 12GB RAM | UFS 3.0 |
| Camera Features | Panorama, HDR |
| Video | 1080p@30fps |
| Loudspeaker | Yes, with DTS:X stereo speakers (2 dedicated amplifiers) |
| 3.5mm Jack | Yes |
| Sound | 24-bit/192kHz audio |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac/ad, dual-band, Wi-Fi Direct |
| Bluetooth | 5.0, A2DP, LE, aptX HD |
| NFC | Yes |
| Radio | FM radio |
| USB | USB Type-C 3.1, accessory connector, OTG |
| Sensors | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass |
| Colors | Matte Black, Glossy Black |
