The Oppo A31 arrived in February 2020 as a budget-friendly entry in Oppo’s long-running A-series, aimed squarely at first-time smartphone buyers and anyone who wants a large screen, a triple camera and an all-day battery without paying flagship money. It pairs a 6.5-inch HD+ display with the MediaTek Helio P35 chipset and a generous 4230 mAh battery, wrapped in a lightweight 180 g body that keeps day-to-day handling comfortable.
Years on from its launch, the A31 remains an interesting reference point for value shoppers and a useful baseline when comparing newer entry-level Oppo phones. This article walks through what the A31 offers, where it makes sensible compromises, and which kind of user still gets the most out of it.
Full Specifications
Network
| Technology: | GSM / HSPA / LTE |
| 2G bands: | GSM 850 / 900 / 1800 / 1900 |
| 3G bands: | HSDPA 850 / 900 / 2100 – International |
| HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 – USA | |
| 4G bands: | 1, 3, 5, 7, 8, 20, 28, 38, 40, 41 – International |
| 1, 2, 3, 4, 5, 7, 8, 28, 38, 41, 66 – USA | |
| 1, 3, 5, 8, 38, 40, 41 – India | |
| 1, 3, 5, 7, 8, 38, 40, 41 – Asia | |
| Speed: | HSPA, LTE |
Launch
| Announced: | 2020, February 13 |
| Status: | Available. Released 2020, February 14 |
Body
| Dimensions: | 163.9 x 75.5 x 8.3 mm (6.45 x 2.97 x 0.33 in) |
| Weight: | 180 g (6.35 oz) |
| Build: | Glass front (Gorilla Glass 3), plastic back, plastic frame |
| SIM: | Nano-SIM + Nano-SIM |
Display
| Type: | IPS LCD, 480 nits (typ) |
| Size: | 6.5 inches, 102.0 cm2 (~82.4% screen-to-body ratio) |
| Resolution: | 720 x 1600 pixels, 20:9 ratio (~270 ppi density) |
| Protection: | Corning Gorilla Glass 3 |
Platform
| OS: | Android 9.0 (Pie), ColorOS 6.1 |
| Chipset: | Mediatek MT6765V/CB Helio P35 (12 nm) |
| CPU: | Octa-core (4×2.3 GHz Cortex-A53 & 4×1.8 GHz Cortex-A53) |
| GPU: | PowerVR GE8320 |
Memory
| Card slot: | microSDXC (dedicated slot) |
| Internal: | 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM |
| eMMC 5.1 |
Main Camera
| Triple: | 12 MP, f/1.8, (wide), 1/2.86″, 1.25µm, PDAF 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth) |
| Features: | LED flash, HDR, panorama |
| Video: | 1080p@30fps |
Selfie camera
| Single: | 8 MP, f/2.0, (wide), 1/4.0″, 1.12µm |
| Features: | HDR |
| Video: | 1080p@30fps |
Sound
| Loudspeaker: | Yes |
| 3.5mm jack: | Yes |
Comms
| WLAN: | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
| Bluetooth: | 5.0, A2DP, LE |
| Positioning: | GPS, GLONASS, BDS |
| NFC: | No |
| Radio: | FM radio |
| USB: | microUSB 2.0, OTG |
Features
| Sensors: | Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass |
Battery
| Type: | Li-Po 4230 mAh |
Misc
| Colors: | Fantasy White, Mystery Black, Lake Green |
| Models: | CPH2015, CPH2073, CPH2081, CPH2029, CPH2031 |
| Price: | $ 76.08 |
Price and Availability
The Oppo A31 offers a compelling combination of features and performance. While the base price is around $76, the actual cost may vary depending on your location and retailer. Below, you’ll find the approximate price of the Oppo A31 converted into various currencies. Please note that these are estimates based on recent exchange rates as of June 26, 2026 and may not reflect the exact price you’ll find at a retailer.
- United States: $76
- Japan: ¥12,308
- United Kingdom: £58
- Australia: A$110
- Canada: C$108
- Taiwan: NT$2,424
- Denmark: kr500
- Saudi Arabia: ﷼285
- South Korea: ₩117,435
- Germany: €67
- Brazil: R$395
- Vietnam: ₫1.997.785
- Kenya: KSh 9,856
- India: ₹7,187
- Indonesia: Rp 1.367.227
- Nigeria: ₦104,466
- Pakistan: ₨21,170
- Philippines: ₱4,664
- Bangladesh: ৳৯,৩৫৯
Where the Oppo A31 Sits on Value
At a launch price in the region of roughly $76, the A31 was positioned as an affordable everyday device rather than a spec-sheet champion. Its appeal comes from balance: a big screen, a flexible triple camera, expandable storage and a large battery in one package. For shoppers prioritising essentials over headline features, that combination is easy to recommend, though pricing and availability vary by region and change over time, so treat any figure as indicative.
Design and Build Quality
The A31 measures 163.9 x 75.5 x 8.3 mm and weighs 180 g, giving it a slim profile that is easy to hold despite the large display. Oppo uses a glass front protected by Corning Gorilla Glass 3, with a plastic back and plastic frame to keep weight and cost down. The rear-mounted fingerprint sensor sits within easy reach, and colour options including Fantasy White, Mystery Black and Lake Green add a touch of personality to an otherwise practical design.
Display Experience
The 6.5-inch IPS LCD panel runs at 720 x 1600 pixels in a tall 20:9 aspect ratio, with around 270 ppi and a typical brightness of 480 nits. It will not match the sharpness or contrast of higher-resolution AMOLED screens found on pricier phones, but for browsing, messaging and video the panel is perfectly serviceable. The roughly 82.4% screen-to-body ratio and waterdrop notch help the front feel modern for the class.
Performance and Software
Powering the A31 is the MediaTek Helio P35 (MT6765), a 12 nm octa-core chip with eight Cortex-A53 cores and a PowerVR GE8320 GPU. This is firmly entry-level silicon tuned for efficiency rather than raw speed, so it handles social apps, web browsing and light multitasking comfortably while heavier games need scaled-back settings. Buyers benefit from RAM choices of 4 GB or 6 GB and storage options of 64 GB or 128 GB on eMMC 5.1, plus a dedicated microSDXC slot for expansion. Out of the box it ships with Android 9.0 Pie under ColorOS 6.1, so anyone buying today should weigh the dated software against their needs.
Camera Capabilities
On the back, the A31 carries a triple camera led by a 12 MP f/1.8 wide sensor with PDAF, supported by a 2 MP macro and a 2 MP depth unit. Features include LED flash, HDR and panorama, with video capped at 1080p at 30fps. The 8 MP f/2.0 front camera also records 1080p video and supports HDR. This is a setup built for casual, well-lit photography and social sharing rather than low-light or detail-critical work, but it covers the everyday basics most budget users expect.
Battery and Charging
A 4230 mAh Li-Po battery is one of the A31’s strongest selling points, comfortably delivering a full day of mixed use thanks in part to the power-efficient chipset and HD+ display. Charging is handled over microUSB 2.0 with OTG support. The reliance on microUSB rather than USB-C is a sign of the phone’s era and budget positioning, so fast-charging expectations should stay modest.
Connectivity and Extras
Connectivity covers 4G LTE with broad regional band support, dual-band Wi-Fi 802.11 a/b/g/n/ac, Bluetooth 5.0 and GPS, GLONASS and BDS positioning. The A31 retains a 3.5mm headphone jack and FM radio, which value-focused buyers often appreciate, but there is no NFC, so contactless payments are off the table. Dual Nano-SIM support alongside the dedicated memory card slot is a practical touch for those who juggle two numbers and still want extra storage.
Who Should Buy the Oppo A31
The A31 makes the most sense for budget-conscious users, students or anyone needing a reliable secondary phone with a big screen and long battery life. If your priorities are media consumption, messaging, calls and casual photos, it ticks the right boxes. Buyers who want fast performance, modern software, USB-C, NFC payments or strong low-light cameras should look at newer models, while the A31 remains a sensible pick for keeping costs low.
Conclusion
The Oppo A31 is a dependable budget phone that prioritises the fundamentals: a large 6.5-inch display, a flexible triple camera, expandable storage and a big 4230 mAh battery, all in a light, comfortable body. Its trade-offs are clear, with an HD+ LCD panel, entry-level Helio P35 performance, dated Android 9 software and no NFC or USB-C. If you want an affordable, no-fuss device for everyday tasks and long battery life, the A31 is worth considering; if you need future-proof software, faster performance or contactless payments, a more recent entry-level model is the better investment.
References
- OPPO India – OPPO A31 Specs – Primary manufacturer specification page for OPPO A31 model CPH-2015, covering dimensions, display, camera, battery, memory, connectivity, SAR, sensors, and product ID.
- MediaTek – Helio P35 – Official chipset reference for the MediaTek Helio P35/MT6765 platform used by the OPPO A31, useful for verifying CPU, GPU, connectivity, video, and storage capabilities.
- GSMArena – Oppo A31 Full Phone Specifications – Established mobile-specification database useful for cross-checking launch details, model naming, variants, and full specs against the official OPPO page.
