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The OPPO K14x 5G has the lower price in one marketplace snapshot, while the vivo Y31 5G has the stronger stated water- and dust-resistance rating. Both list a 6500mAh battery and an HD+ 120Hz LCD screen. The price evidence is not a like-for-like comparison, however: it involves different retailers and storage configurations, and vivo’s own store showed a much higher price for a specific variant.
vivo Y31 5G vs OPPO K14x 5G: key specifications
| Specification | vivo Y31 5G | OPPO K14x 5G |
|---|---|---|
| Processor | Qualcomm Snapdragon 4 Gen 2 | MediaTek Dimensity 6300 |
| Display | 6.68-inch LCD; 1608 × 720; up to 120Hz; 1000-nit HBM listed by vivo | 6.75-inch HD+ LCD; 120Hz; up to 1125-nit peak brightness claimed by OPPO |
| Battery | 6500mAh typical; 6355mAh rated | 6500mAh |
| Charging | 44W FlashCharge | 45W fast charging, per OPPO |
| Ingress protection | IP68 and IP69 | IP64 |
| Rear camera | 50MP main camera and 0.08MP secondary camera | 50MP rear camera, per OPPO’s launch announcement |
| Front camera | 8MP | 5MP in 91mobiles’ comparison listing; check the exact SKU |
| Software | Android 15 with Funtouch OS 15 | ColorOS 15 based on Android 15, per OPPO’s launch announcement |
Which phone is cheaper right now?
A 91mobiles comparison snapshot accessed in 2026 listed the vivo Y31 5G at ₹19,999 at Flipkart and the OPPO K14x 5G at ₹17,167 at Amazon. That is a nominal ₹2,832 difference, but the snapshot compares a vivo listing with 128GB storage against an OPPO listing with 64GB storage. Prices, stock and offers can change, so check the exact variant and seller before buying.
The manufacturer-store price for vivo adds another qualification: vivo India’s store listed the Y31 5G 6GB+128GB at ₹27,999 when accessed in 2026, and showed that selected variant as unavailable. This is a distinct listing, not proof that every Y31 5G costs ₹27,999. The available figures do not establish a current, like-for-like price winner.
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Both phones are listed with HD+ 120Hz LCD displays and 6500mAh batteries. The vivo panel measures 6.68 inches at 1608 × 720, while OPPO lists a slightly larger 6.75-inch panel. vivo specifies 1000-nit HBM brightness; OPPO claims up to 1125 nits peak brightness. Those brightness figures may use different measurement modes, so they do not by themselves show which screen looks brighter in the same conditions.
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vivo labels its battery as 6500mAh typical and 6355mAh rated; those figures describe different capacity conventions rather than competing battery sizes. vivo lists 44W FlashCharge and OPPO announced 45W charging. The one-watt difference is small on paper, but no same-condition charging-time test establishes which handset charges faster in practice.
OPPO’s battery-duration figures are company claims
In its 2 February 2026 launch announcement, OPPO reported K14x test results of up to 20.9 hours of screen-off calls, 17.6 hours of YouTube playback, 16.1 hours of Google Maps navigation and 12.1 hours of WhatsApp video calls. OPPO’s product page separately lists around 22.4 hours of online video, 11.1 hours of MOBA gaming, 51.4 hours of screen-off calls and 882.1 hours of standby, with test assumptions and footnotes on the page. These are manufacturer-reported results under stated conditions, not independent tests or a guarantee of an individual buyer’s battery life; they also cannot be directly compared with vivo results here.
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Which phone has better water resistance?
On the published ingress-protection ratings, vivo has the advantage: its Y31 5G is rated IP68 and IP69, compared with IP64 for the OPPO K14x. These ratings indicate different levels of protection, but neither phone is indestructible. vivo notes limitations for its ratings and says liquid damage is not covered by warranty; do not treat a rating as warranty coverage for water damage.
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The Snapdragon 4 Gen 2 and Dimensity 6300 are different platforms, but their names or maximum clock speeds alone do not establish which phone performs better day to day. There is no standardized independent benchmark comparison here to support a performance verdict.
Rank #3
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- 2. Our phone cases are precision-engineered with easy access to all functions. Crafted from high-quality materials with impeccable workmanship.
- 3. Choose from a wide range of vibrant colors for a personalized touch. These cases are built to withstand drops, scratches, and provide a non-slip grip.
- 4. Enjoy a comfortable hold with the ultra-thin design that doesn't compromise on protection. HULLIN offers outstanding value for your money.
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The listed rear-camera resolutions are 50MP for both, with vivo also listing a 0.08MP secondary camera. The comparison listing reports a 5MP front camera for the OPPO, while vivo lists 8MP; confirm the OPPO camera specification for the exact model variant if selfies matter to your choice. Megapixel counts do not establish image quality, and no controlled side-by-side photo test is available to show which camera performs better.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Which storage variant is being compared?
vivo’s official specification listing offers 4GB+128GB, 6GB+128GB and 6GB+256GB configurations. The 91mobiles snapshot uses a 4GB RAM, 64GB storage OPPO listing. OPPO’s official headline product information does not establish that this is the only K14x configuration, so verify the RAM and storage on the specific regional listing you intend to buy. Variant differences matter when comparing prices, available capacity and multitasking headroom.
Quick Recap
Best Value
- 1. Introducing HULLIN Phone Cases, exclusively designed for vivo Y31 5G / vivo Y31e 5G / vivo Y21d. Check product images before purchasing to confirm your phone model.
- 2. Our phone cases are precision-engineered with easy access to all functions. Crafted from high-quality materials with impeccable workmanship.
- 3. Choose from a wide range of vibrant colors for a personalized touch. These cases are built to withstand drops, scratches, and provide a non-slip grip.
- 4. Enjoy a comfortable hold with the ultra-thin design that doesn't compromise on protection. HULLIN offers outstanding value for your money.
- 5. Elevate your phone's style and durability with HULLIN Phone Cases. Order now for a stylish and functional accessory.
Rank #4
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- Easy to install and remove. Easily access to power, volume and all ports, buttons and functions according to the precise cutouts.
- If you have any questions about our products, please contact us as soon as possible through Amazon Seller Center. We will reply promptly.
Which one should you choose?
- Consider the vivo Y31 5G if its stronger stated IP68/IP69 rating or listed 8MP front camera is more important to you, and you have confirmed the price and availability of your preferred variant.
- Consider the OPPO K14x 5G if the lower observed marketplace price and slightly larger display appeal, after checking the exact storage configuration and current seller offer.
- Do not choose on performance, camera quality or battery life alone from these specifications: the evidence here does not include controlled comparisons for those outcomes.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
