| Hardware and OS | Cubot X18 Plus | Oppo A3s |
| Operating system | Android 8.0 Oreo OS | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | 4 x 1.5GHz ARM Cortex-A53, 4 x 1.0GHz ARM Cortex-A53 CPU Clock | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | | Qualcomm SDM450 Snapdragon 450 (14 nm) |
| GPU | ARM Mali-T860 MP2, 650MHz | Adreno 506 |
| RAM | 4GB | |
| Internal memory | | 16 GB, 2 GB RAM |
| Internal Storage | 64GB | |
| External memory | | microSD, up to 256 GB (dedicated slot) |
| Memory Card Slot | Memory Support Up to 256GB (Uses SIM 2 Slot) | |
| User Interface | Yes with Modified Android | |
| Display | Cubot X18 Plus | Oppo A3s |
| Type | IPS, LCD capacitive touchscreen | IPS LCD |
| Size | 5.99 inches FHD | 6.2" inc |
| Resolution | 2160 x 1080 Pixels, 24 bit color depth | 720 x 1520 px |
| Touchscreen | Yes Multi Touch Support | capacitive touchscreen |
| Screen-to-Body Ratio | | 81.2% |
| Display area | | 95.9 cm2 |
| Display aspect ratio | | 19:9 (height:width) |
| Pixel Density | ~ 403.16 ppi | 271 PPI |
| Protection | Yes | |
| Colors | 16M Colors | 16M |
| Features | IPS, LCD FHD display, ~403.16 ppi, Multi-touch Capacitive Screen, Color saturation(NTSC) 90%, 2.5D Curved Glass Screen, GFF Full Lamination Technology, High contrast 1300:1, 0.063mm dot pitch | |
| Connectivity | Cubot X18 Plus | Oppo A3s |
| 2G Network | | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | | HSDPA 850 / 900 / 2100 |
| 4G Network | Yes | LTE |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, HotSpot | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| NFC | No | |
| Network | | GSM / HSPA / LTE |
| SIM card | | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth | | 4.2, A2DP, LE |
| SIM | Nano SIM | |
| Edge | | Yes |
| Dual SIM | Hybrid Dual SIM (Nano SIM, Nano SIM/microSD), Dual Standby | |
| GPRS | | Yes |
| Wireless Charging | No | |
| GPS | Yes, with GPS, A-GPS, GLONASS | Yes, with A-GPS |
| Speed | LTE-FDD: B1 2100MHz / B20 800MHz / B3 1800MHz / B7 2600MHz / B8 900MHz | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps |
| USB | USB Type-C Charging & Mass Storage | microUSB 2.0, USB On-The-Go |
| Camera | Cubot X18 Plus | Oppo A3s |
| Image | 4619 x 3464 Pixels | |
| Main camera | 16 Megapixels (SW 20.0MP) f/2.2 0.3 Megapixels | 13 MP, Dual |
| Specs | | 13 MP, f/2.2, AF
-2 MP, f/2.4, depth sensor |
| Features | Yes with Dual LED Flash | LED flash, HDR, panorama |
| Video | | 1080p@30fps |
| Selfie camera | 8 Megapixels f/2.2 (SW 13.0MP) | 8 MP, Single |
| Multimedia | Cubot X18 Plus | Oppo A3s |
| Loudspeaker | Yes | |
| Handsfree | Yes | |
| Video Playback | Yes Support AVI, 3gp/3g2, MP4, FLV (H.264), MKV, MOV, WMV (WMV_9), MebM, F4V (H.264) | |
| Video Out | Yes With Wireless Media Link | |
| 3.5 mm Jack | yes | Yes |
| Ring Tones | Yes | |
| Radio | Yes | FM radio |
| Design | Cubot X18 Plus | Oppo A3s |
| Colors | | Red, Dark Purple |
| Dimensions | 6.24 in x 2.9 in x 0.33 in | 156.2 x 75.6 x 8.2 mm |
| Waterproof | No | |
| Weight | 178.8 Grams (With Battery) | 168 g |
| Battery | Cubot X18 Plus | Oppo A3s |
| Battery capacity | | 4230 mAh, Non-removable Li-Ion |
| Capacity | 4,000 mAh Lithium-Ion | |
| Placement | Non-Removable | |
| Other | Cubot X18 Plus | Oppo A3s |
| Release date | | 2018, July |
| Sensors | Proximity Sensor, Light Sensor, Accelerometer, Fingerprint sensor (Rear Mounted) Sensor | Accelerometer, proximity, compass |
