| Hardware and OS | HTC One Max | Oppo A3s |
| Operating system | Android 4.3 (Jelly Bean), upgradable to 5.0 (Lollipop); Sense UI 5.5 | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | Quad-core 1.7 GHz Krait 300 | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | Qualcomm APQ8064 Snapdragon 600 | Qualcomm SDM450 Snapdragon 450 (14 nm) |
| GPU | Adreno 320 | Adreno 506 |
| Internal memory | 16/32 GB, 2 GB RAM | 16 GB, 2 GB RAM |
| External memory | microSD, up to 64 GB (dedicated slot) | microSD, up to 256 GB (dedicated slot) |
| Display | HTC One Max | Oppo A3s |
| Type | Super LCD3 | IPS LCD |
| Size | 5.9" inc | 6.2" inc |
| Resolution | 1080 x 1920 px | 720 x 1520 px |
| Protection | Corning Gorilla Glass 3 | |
| Touchscreen | capacitive touchscreen | capacitive touchscreen |
| Screen-to-Body Ratio | 70.7% | 81.2% |
| Display area | 96.0 cm2 | 95.9 cm2 |
| Display aspect ratio | 16:9 (height:width) | 19:9 (height:width) |
| Pixel Density | 373 PPI | 271 PPI |
| Colors | 16M | 16M |
| Connectivity | HTC One Max | Oppo A3s |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 900 / 1900 / 2100 - EMEA | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE band 3(1800), 7(2600), 8(900), 20(800) - EMEA | LTE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi Direct, DLNA, hotspot | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| Network | GSM / CDMA / HSPA / LTE | GSM / HSPA / LTE |
| SIM card | Micro-SIM | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth | 4.0, A2DP, aptX | 4.2, A2DP, LE |
| Edge | Yes | Yes |
| GPRS | Yes | Yes |
| GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS |
| NFC | Yes | |
| Speed | HSPA, LTE Cat3 100/50 Mbps | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps |
| USB | microUSB 2.0 (MHL TV-out) | microUSB 2.0, USB On-The-Go |
| Camera | HTC One Max | Oppo A3s |
| Main camera | 4 MP, Single | 13 MP, Dual |
| Specs | 4 MP, 1/3', 2µm, AF | 13 MP, f/2.2, AF
-2 MP, f/2.4, depth sensor |
| Features | LED flash | LED flash, HDR, panorama |
| Video | 1080p@30fps, 720p@60fps, HDR, stereo sound rec. | 1080p@30fps |
| Selfie camera | 2.1 MP, Single | 8 MP, Single |
| Multimedia | HTC One Max | Oppo A3s |
| 3.5 mm Jack | Yes | Yes |
| Radio | Stereo FM radio, RDS | FM radio |
| Design | HTC One Max | Oppo A3s |
| Colors | Silver, Black, Gold | Red, Dark Purple |
| Dimensions | 164.5 x 82.5 x 10.3 mm | 156.2 x 75.6 x 8.2 mm |
| Weight | 217 g | 168 g |
| Battery | HTC One Max | Oppo A3s |
| Battery capacity | 3300 mAh, Non-removable Li-Po | 4230 mAh, Non-removable Li-Ion |
| Battery life | Stand by time- Up to 585 h (3G)
Talking time- Up to 25 h (3G)
| |
| Other | HTC One Max | Oppo A3s |
| SAR | SAR - 0.81 W/kg (head), 0.21 W/kg (body) | |
| Release date | 2013, October | 2018, July |
| Sensors | Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass , Infrared port | Accelerometer, proximity, compass |
