| HTC Touch Diamond2 CDMA |
Oppo A3s |
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| Hardware and OS | HTC Touch Diamond2 CDMA | Oppo A3s |
| Operating system | Microsoft Windows Mobile 6.5 Professional | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | 528 MHz ARM 11 | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | Qualcomm MSM7200A | Qualcomm SDM450 Snapdragon 450 (14 nm) |
| GPU | Adreno 130 | Adreno 506 |
| Internal memory | 288 MB RAM, 512 MB ROM | 16 GB, 2 GB RAM |
| External memory | microSD, up to 16 GB (dedicated slot) | microSD, up to 256 GB (dedicated slot) |
| Display | HTC Touch Diamond2 CDMA | Oppo A3s |
| Type | TFT | IPS LCD |
| Size | 3.6" inc | 6.2" inc |
| Resolution | 480 x 800 px | 720 x 1520 px |
| Touchscreen | resistive touchscreen | capacitive touchscreen |
| Screen-to-Body Ratio | 50.6% | 81.2% |
| Display area | 36.9 cm2 | 95.9 cm2 |
| Display aspect ratio | 5:3 (height:width) | 19:9 (height:width) |
| Pixel Density | 259 PPI | 271 PPI |
| Other | TouchFLO 3D finger swipe navigation -Handwriting recognition | |
| Colors | 16M | |
| Connectivity | HTC Touch Diamond2 CDMA | Oppo A3s |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| Wi-Fi | Wi-Fi 802.11 b/g | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| 3G Network | HSDPA 850 / 900 / 2100 | |
| Network | GSM / CDMA / HSPA / EVDO | GSM / HSPA / LTE |
| 4G Network | LTE | |
| SIM card | Mini-SIM | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth | 2.1, A2DP | 4.2, A2DP, LE |
| Edge | Class 10 | Yes |
| GPRS | Class 10 | Yes |
| GPS | Yes, with A-GPS | Yes, with A-GPS |
| Speed | HSPA 7.2/2 Mbps, EV-DO Rev.A 3.1 Mbps | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps |
| USB | 2.0 | microUSB 2.0, USB On-The-Go |
| Camera | HTC Touch Diamond2 CDMA | Oppo A3s |
| Main camera | 5 MP, Single | 13 MP, Dual |
| Specs | 5 MP, AF | 13 MP, f/2.2, AF -2 MP, f/2.4, depth sensor |
| Video | Yes | 1080p@30fps |
| Selfie camera | 0.3 MP, Single | 8 MP, Single |
| Features | LED flash, HDR, panorama | |
| Multimedia | HTC Touch Diamond2 CDMA | Oppo A3s |
| 3.5 mm Jack | Yes | Yes |
| Radio | Stereo FM radio, RDS | FM radio |
| Design | HTC Touch Diamond2 CDMA | Oppo A3s |
| Colors | Black | Red, Dark Purple |
| Dimensions | 118.1 x 61.7 x 14 mm | 156.2 x 75.6 x 8.2 mm |
| Weight | 150.3 g | 168 g |
| Battery | HTC Touch Diamond2 CDMA | Oppo A3s |
| Battery capacity | 1500 mAh, Removable Li-Ion | 4230 mAh, Non-removable Li-Ion |
| Battery life | Stand by time- Up to 324 h Talking time- Up to 5 h 50 min | |
| Other | HTC Touch Diamond2 CDMA | Oppo A3s |
| SAR | SAR - 1.34 W/kg (head), 0.47 W/kg (body) | |
| Release date | 2009, December | 2018, July |
| Sensors | Accelerometer, proximity, compass |
