| Hardware and OS | HTC Windows Phone 8X | Oppo A3s |
| Operating system | Microsoft Windows Phone 8, upgradable to 8.1.1 | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | Dual-core 1.5 GHz Krait | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | Qualcomm MSM8960 Snapdragon S4 Plus | Qualcomm SDM450 Snapdragon 450 (14 nm) |
| GPU | Adreno 225 | Adreno 506 |
| Internal memory | 16 GB, 1 GB RAM | 16 GB, 2 GB RAM |
| External memory | No | microSD, up to 256 GB (dedicated slot) |
| Display | HTC Windows Phone 8X | Oppo A3s |
| Type | S-LCD2 | IPS LCD |
| Size | 4.3" inc | 6.2" inc |
| Resolution | 720 x 1280 px | 720 x 1520 px |
| Protection | Corning Gorilla Glass 2 | |
| Touchscreen | capacitive touchscreen | capacitive touchscreen |
| Screen-to-Body Ratio | 58.2% | 81.2% |
| Display area | 51.0 cm2 | 95.9 cm2 |
| Display aspect ratio | 16:9 (height:width) | 19:9 (height:width) |
| Pixel Density | 342 PPI | 271 PPI |
| Colors | 16M | 16M |
| Connectivity | HTC Windows Phone 8X | Oppo A3s |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE band 2(1900), 4(1700/2100), 5(850), 17(700) - AT&T | LTE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, dual-band | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| Network | GSM / HSPA / LTE | GSM / HSPA / LTE |
| SIM card | Micro-SIM | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth | 3.1, A2DP, EDR/ 4.0, LE after Amber update | 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, EV-DO Rev.A 3.1 Mbps (LTE for AT&T version) | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps |
| USB | microUSB 2.0 | microUSB 2.0, USB On-The-Go |
| Camera | HTC Windows Phone 8X | Oppo A3s |
| Main camera | 8 MP, Single | 13 MP, Dual |
| Specs | 8 MP, AF | 13 MP, f/2.2, AF
-2 MP, f/2.4, depth sensor |
| Features | LED flash | LED flash, HDR, panorama |
| Video | 1080p@30fps | 1080p@30fps |
| Selfie camera | 2.1 MP, Single | 8 MP, Single |
| Multimedia | HTC Windows Phone 8X | Oppo A3s |
| 3.5 mm Jack | Yes | Yes |
| Radio | FM radio | FM radio |
| Design | HTC Windows Phone 8X | Oppo A3s |
| Colors | California Blue, Graphite Black, Flame Red, Limelight Yellow | Red, Dark Purple |
| Dimensions | 132.4 x 66.2 x 10.1 mm | 156.2 x 75.6 x 8.2 mm |
| Weight | 130 g | 168 g |
| Battery | HTC Windows Phone 8X | Oppo A3s |
| Battery capacity | 1800 mAh, Non-removable Li-Ion | 4230 mAh, Non-removable Li-Ion |
| Other | HTC Windows Phone 8X | Oppo A3s |
| Sensors | | Accelerometer, proximity, compass |
| SAR | SAR - 0.59 W/kg (head), 0.32 W/kg (body) | |
| Release date | 2012, September | 2018, July |
