| Hardware and OS | iTel A33 Plus | Oppo A3s |
| Operating system | Android 11 (Go Edition) | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | Quad-core 1.3 GHz Cortex-A7 (32nm) | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | Mediatek MT6580A | Qualcomm SDM450 Snapdragon 450 (14 nm) |
| GPU | Mali-400MP2 | Adreno 506 |
| RAM | 1 GB | |
| Internal memory | | 16 GB, 2 GB RAM |
| Memory Card Slot | Yes, up to 32 GB via microSD card | |
| External memory | | microSD, up to 256 GB (dedicated slot) |
| Display | iTel A33 Plus | Oppo A3s |
| Type | IPS LCD capacitive touchscreen, 16M colors | IPS LCD |
| Size | 5 inches, (73.2% screen-to-body ratio) | 6.2" inc |
| Resolution | 480 x 854 pixels, 18:9 ratio | 720 x 1520 px |
| Touchscreen | | capacitive touchscreen |
| Screen-to-Body Ratio | | 81.2% |
| Display area | | 95.9 cm2 |
| Display aspect ratio | | 19:9 (height:width) |
| Pixel Density | | 271 PPI |
| Colors | | 16M |
| Connectivity | iTel A33 Plus | Oppo A3s |
| Technology | GSM / HSPA | |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 and SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| NFC | No | |
| 3G Network | HSDPA 850 / 1900 | HSDPA 850 / 900 / 2100 |
| 4G Network | | LTE |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| Network | | GSM / HSPA / LTE |
| SIM card | | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth | Bluetooth 4.2 | 4.2, A2DP, LE |
| Edge | | Yes |
| GPRS | | Yes |
| GPS | Yes, with A-GPS | Yes, with A-GPS |
| Speed | HSPA 21.1/5.76 Mbps | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps |
| USB | Micro USB 2.0 | microUSB 2.0, USB On-The-Go |
| Camera | iTel A33 Plus | Oppo A3s |
| Camera Features | touch focus, HDR | |
| Camera Type | Single Lens | |
| Video Recording | 720p | |
| Video Resolution | VGA | |
| Main camera | 5-megapixel 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 | 2-megapixel | 8 MP, Single |
| Multimedia | iTel A33 Plus | Oppo A3s |
| Headphone jack | Yes, 3.5mm audio jack | |
| FM Radio | Yes | |
| Loudspeaker | Yes | |
| Speaker Location | Back | |
| 3.5 mm Jack | | Yes |
| Radio | | FM radio |
| Design | iTel A33 Plus | Oppo A3s |
| SIM | Dual SIM (Micro-SIM, dual stand-by) | |
| Colors | | Red, Dark Purple |
| Dimensions | 136.7 x 68 x 8.3 mm | 156.2 x 75.6 x 8.2 mm |
| Weight | 123 grams | 168 g |
| Other features | iTel A33 Plus | Oppo A3s |
| Colors | Blue and Dark Blue | |
| Sensors | Fingerprint (rear-mounted), accelerometer, proximity | |
| Battery | iTel A33 Plus | Oppo A3s |
| Capacity | Removable Li-Ion 3020mAh battery | |
| Battery capacity | | 4230 mAh, Non-removable Li-Ion |
| Other | iTel A33 Plus | Oppo A3s |
| Release date | | 2018, July |
| Sensors | | Accelerometer, proximity, compass |
