| Hardware and OS | Asus ROG Phone II ZS660KL | |
| Operating system | Android 9.0 (Pie), ROG UI | |
| Processor | Octa-core (1x2.96 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485) | |
| Chipset | Qualcomm SM8150 Snapdragon 855 (7 nm) | |
| Internal memory | 128GB 8GB RAM, 256GB 12GB RAM, 512GB 12GB RAM, 1TB 12GB RAM | |
| External memory | No | |
| GPU | Adreno 640 (700 MHz) | |
| Display | Asus ROG Phone II ZS660KL | other phones |
| Size | 6.59 inches, 106.6 cm2 | |
| Resolution | 1080 x 2340 pixels, 19.5:9 ratio | |
| Type | AMOLED capacitive touchscreen, 16M colors | |
| Protection | Corning Gorilla Glass 6 | |
| Main Camera | Asus ROG Phone II ZS660KL | other phones |
| Camera | 48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8?m, PDAF, Laser AF
13 MP, f/2.4, 11mm (ultrawide) | |
| Features | LED flash, HDR, panorama | |
| Video | 2160p@30/60fps, 1080p@30/60/240fps, 720p@480fps; gyro-EIS (except @240/480fps) | |
| Selfie camera | Asus ROG Phone II ZS660KL | other phones |
| Camera | 24MP, f/2.2, 0.9?m | |
| Features | Panorama, HDR | |
| Video | 1080p@30fps | |
| Connectivity | Asus ROG Phone II ZS660KL | other phones |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | |
| 4G Network | LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 18(800), 19(800), 20(800), 28(700), 29(700), 32(1500), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500), 46(5200) | |
| Bluetooth | 5.0, A2DP, LE, aptX HD | |
| GPS | Yes, with dual-band A-GPS, GLONASS, BDS, GALILEO, QZSS | |
| NFC | Yes | |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (5CA) Cat18 (Cat20 Ultimate edition) 1200/150 Mbps | |
| Technology | GSM / HSPA / LTE | |
| USB | 3.1, Type-C 1.0 reversible connector; accessory connector | |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac/ad, dual-band, Wi-Fi Direct, hotspot | |
| Multimedia | Asus ROG Phone II ZS660KL | other phones |
| 3.5 mm Jack | Yes | |
| Loudspeaker | Yes, with DTS:X stereo speakers (2 dedicated amplifiers) | |
| Multimedia | 24-bit/192kHz audio | |
| Radio | FM radio | |
| Battery | Asus ROG Phone II ZS660KL | other phones |
| Capacity | Non-removable Li-Po 6000 mAh battery | |
| Design | Asus ROG Phone II ZS660KL | other phones |
| Body build | Glass front (Gorilla Glass 6), glass back (Gorilla Glass 3), aluminum frame | |
| Colors | Matte Black, Glossy Black | |
| Dimensions | 171 x 77.6 x 9.5 mm (6.73 x 3.06 x 0.37 in) | |
| Weight | 240 g (8.47 oz) | |
| SIM | Dual SIM (Nano-SIM, dual stand-by) | |
| Features | Asus ROG Phone II ZS660KL | other phones |
| Sensors | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass | |
