| Siemens SX45 |
Oppo A3s |
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| Hardware and OS | Siemens SX45 | Oppo A3s |
| Operating system | Microsoft Windows CE 3.0 for PocketPC | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | 64-bit NEC VR4122 150 MHz | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | Qualcomm SDM450 Snapdragon 450 (14 nm) | |
| GPU | Adreno 506 | |
| Internal memory | 32 MB | 16 GB, 2 GB RAM |
| External memory | No | microSD, up to 256 GB (dedicated slot) |
| Display | Siemens SX45 | Oppo A3s |
| Type | TFT | IPS LCD |
| Size | 6.2" inc | |
| Resolution | 240 x 320 px | 720 x 1520 px |
| Touchscreen | resistive touchscreen | capacitive touchscreen |
| Screen-to-Body Ratio | 81.2% | |
| Other | 57.6 mm x 76.8 mm -0.24 mm pixel pitch | |
| Display area | cm2 | 95.9 cm2 |
| Display aspect ratio | 4:3 (height:width) | 19:9 (height:width) |
| Pixel Density | 271 PPI | |
| Colors | 65K | 16M |
| Connectivity | Siemens SX45 | Oppo A3s |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | HSDPA 850 / 900 / 2100 | |
| 4G Network | LTE | |
| Wi-Fi | No | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| Network | GSM | GSM / HSPA / LTE |
| SIM card | Mini-SIM | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth | No | 4.2, A2DP, LE |
| Edge | No | Yes |
| GPRS | No | Yes |
| GPS | No | Yes, with A-GPS |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps | |
| USB | microUSB 2.0, USB On-The-Go | |
| Camera | Siemens SX45 | Oppo A3s |
| Main camera | 13 MP, Dual | |
| Specs | 13 MP, f/2.2, AF -2 MP, f/2.4, depth sensor | |
| Features | LED flash, HDR, panorama | |
| Video | 1080p@30fps | |
| Selfie camera | 8 MP, Single | |
| Multimedia | Siemens SX45 | Oppo A3s |
| 3.5 mm Jack | No | Yes |
| Radio | No | FM radio |
| Design | Siemens SX45 | Oppo A3s |
| Colors | Red, Dark Purple | |
| Dimensions | 134 x 87 x 26 mm | 156.2 x 75.6 x 8.2 mm |
| Weight | 330 g | 168 g |
| Battery | Siemens SX45 | Oppo A3s |
| Battery life | Stand by time- Up to 150 h Talking time- Up to 2 h | |
| Battery capacity | 1550 mAh, Removable Li-Ion | 4230 mAh, Non-removable Li-Ion |
| Other | Siemens SX45 | Oppo A3s |
| Release date | 2001 | 2018, July |
| Sensors | Infrared port | Accelerometer, proximity, compass |
