OPPO K13x 5G (6GB RAM +128GB) vs Vivo Y31 5G
Quick Comparison
OPPO K13x 5G (6GB RAM +128GB) has better RAM than Vivo Y31 5G. In terms of display resolution, Vivo Y31 5G has better resolution of 1620 x 720 than OPPO K13x 5G (6GB RAM +128GB) which has resolution of 1604 x 720. Both have the same amount of internal memory.
| Name | OPPO K13x 5G (6GB RAM +128GB) | Vivo Y31 5G |
| RAM | 6 GB | 4 GB |
|---|---|---|
| Display | 6.67 in | 6.68 in |
| Internal Memory | 128 GB | 128 GB |
| Battery | 6000 mAh | 6500 mAh |
| Camera | 50 MP + 2 MP Dual | 50 MP + 0.08 MP Dual |
| Price | Rs. 12499 | Rs. 14999 |
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Detailed Comparison
Price And Launch
The launch Date of the first phone is June 23, 2025. The cost of OPPO K13x 5G (6GB RAM +128GB) is Rs. 12499. The launch Date of the second phone is September 14, 2025. The cost of Vivo Y31 5G is Rs. 14999.
Display comparison
Vivo Y31 5G has larger screen size of 6.68 inches in comparison to OPPO K13x 5G (6GB RAM +128GB)'s 6.67 inch screen. OPPO K13x 5G (6GB RAM +128GB) has Screen type where as Vivo Y31 5G has IPS Screen type. Vivo's phone has display density of 266 PPI & OPPO's phone has only 264 PPI display density. In terms of screen to body ratio, Vivo's phone has better screen to body ratio of ~ 90.7% than OPPO's phone ~ 89.9%. Both phones have same aspect ratio of 20:9.
Memory comparison
OPPO K13x 5G (6GB RAM +128GB)'s larger 6 GB RAM is better for playing games and all with respect to Vivo Y31 5G's lower 4 GB RAM. and both have same Internal Memory of 128 GB.
Camera comparison
They both have the same 50 MP + 2 MP Dual Rear Camera. Both of them stand equal in terms of Front Camera Resolution as both have 8 MP Front Camera.
Technical comparison
Both the phones run on Android Operating System Version 15.
Related Comparisons
Full Comparison
| Name | OPPO K13x 5G (6GB RAM +128GB) | Vivo Y31 5G |
| General | ||
| Country of Origin | India | India |
| Model | K13x | Y31 |
| Sim Type | Dual Sim, GSM+GSM (Hybrid Slot) | Dual Sim, GSM+GSM (Hybrid Slot) |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | Nano+Nano SIM |
| Device Type | Smartphone | Smartphone |
| Release Date | June 23, 2025 | September 14, 2025 |
| In The Box | Handset, Charger, USB Data Cable, Sim Ejector Tool, Quick Guide, Protective Case | USB Cable, SIM Tray Ejector, Phone Case, Screen Protector (Applied), Power Adapter |
| Design | ||
| Dimensions | 76.2 x 165.7 x 7.9 mm | |
| Weight | 194 g | |
| Colors | Midnight Violet, Sunset Peach | |
| Display | ||
| Type | Color HD+ LCD (16.7 Million) | Color IPS Screen (16M Colors) |
| Touch | Yes, 240 Hz Touch Sampling Rate | Yes |
| Size | 6.67 inches, 720 x 1604 pixels, 120 Hz | 6.68 inches, 720 x 1620 pixels, 120 Hz |
| Aspect Ratio | 20:9 | 20:9 |
| PPI | ~ 264 PPI | ~ 266 PPI |
| Screen to Body Ratio | ~ 89.9% | ~ 90.7% |
| Brightness | Brightness: 850nit (Normal), 1000nit (HBM) | 1000nts |
| Features | 10 Touch Points, Contrast Ratio: 1500:1 (Typical), Color Saturation: 83% NTSC, Color Gamut: 88% DCI-P3 (Vivid Mode), 100% sRGB (Natural Mode), Supports Dark Mode, DC Dimming, Supports Eye Comfort, Supports Sunlight Screen | |
| Notch | Yes, Punch Hole | Yes, Water Drop Notch |
| Memory | ||
| RAM | 6 GB | 4 GB |
| Expandable RAM | Upto 4 GB Extra Virtual RAM | |
| Storage | 128 GB | 128 GB |
| Storage Type | UFS | |
| Card Slot | Yes, (Hybrid Slot), upto 2 TB | |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | Yes |
| 5G Bands | n1/n3/n5/n8/n28B/n40/n41/n77/n78 | |
| VoLTE | Yes | Yes, Dual Stand-By |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Wifi Version | WiFi 5 (802.11 ac), 802.11 b/g/a/n, WLAN 2.4 GHz, WLAN 5 GHz, Dual Band (WiFi 2.4 GHz, WiFi 5 GHz) | |
| Bluetooth | Yes, v5.4, SBC, AAC, aptX, aptX HD, and LDAC | Yes, v5.4 |
| USB | Yes, USB-C v2.0 | Yes, USB-C v2.0 |
| USB Features | USB Tethering, USB on-the-go, USB Charging | USB Tethering, USB on-the-go, USB Charging |
| Extra | ||
| GPS | Yes, BEIDOU, GPS, GLONASS, GALILEO, QZSS, AGPS | with A-GPS, BeiDou, GLONASS, Galileo |
| Fingerprint Sensor | Yes, Side | Yes, Side |
| Face Unlock | Yes | Yes |
| Sensors | Proximity Sensor, Ambient Light Sensor, E-Compass, Accelerometer | Accelerometer, Ambient Light Sensor, Proximity Sensor, E-compass, Virtual Gyroscope |
| 3.5mm Headphone Jack | Yes | |
| AI Features | AI Eraser, AI Clarity Enhancer, AI Smart Image Matting 2.0, AI Reflection Remover, AI Unblur, AI Motion, AI Portrait, AI Reimage, AI Summary, AI Writer | SMart AI, Ai Erase, Ai Photo Enhance, Circle to Search |
| Water Resistance | 1.18 m upto 1.05 min | |
| Splash Resistant | Yes | |
| IP Rating | IP65 | |
| Dust Resistant | Yes | |
| Extra Features | Dual-view Video, Outdoor Mode and Glove Touch, Ultra-Volume Mode, Trinity Engine, Screen Translator, Google Gemini App | |
| Camera | ||
| Rear Camera | 50 MP ƒ/1.8 (Wide Angle) OV50D, 1/2.88 inch Sensor Size, 0.61um Pixel Size, CMOS(4-in-1), FOV: 76 Degree, Equivalent Focal Length: 27mm, 5P Lens, Effective Focal Length: 3.98mm, PDAF 2 MP ƒ/2.4 (Depth Sensor) 1.75um Pixel Size, CMOS, 1/5 inch Sensor Size, FOV: 89 Degree, Equivalent Focal Length: 22mm, 3P Lens, Effective Focal Length: 1.77mm, Fixed Focus) | 50 MP (Main) 0.08 MP |
| Auto Focus | Yes | Yes |
| Features | Photo, Video, Portrait, Night, Pro, Panorama, Slo-Mo, Dual View Video, Timelapse, Sticker, Hypertext, Hi-Res, Google Lens, Supports Fill Light for Video Shooting | |
| Video Recording | 1080p @ 60 fps FHD, 720p @ 30 fps HD | 1080p @ 30 fps FHD |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 8 MP ƒ/2 (Wide Angle) 1.12um Pixel Size, CMOS, 1/4 inch Sensor Size, FOV: 80 Degree, Equivalent Focal Length: 25mm, 4P Lens, Effective Focal Length: 2.66mm, Fixed Focus Punch Hole | 8 MP ƒ/2 |
| Front Video Recording | 1080p @ 30 fps FHD, 720p @ 30 fps HD | |
| Technical | ||
| OS | Android v15 | Android v15 |
| Custom UI | ColorOS 15 | |
| Chipset | Mediatek Dimensity 6300 | MediaTek Dimensity 6300 |
| CPU | 2.4 GHz, Octa Core Processor | Octa Core Processor |
| Core Details | 2X Arm Cortex-A76@2.4GHz & 6X Arm Cortex-A55@2.0GHz | |
| GPU | ARM Mali-G57 MC2 | |
| Java | No | No |
| Browser | Yes | Yes |
| Multimedia | ||
| Yes | Yes | |
| Music | MP3, AAC, AMR, APE, OGG, FLAC, WAV, MIDI, WMA | WAV, MP3, MP2, AMR-NB, MIDI, Vorbis, APE, FLAC, OGG, M4A |
| Video | AVI, 3GP, MP4, WMV, MKV, MOV, ASF, FLV, Webm, TS | MP4, 3GP, AVI, TS, MKV, FLV |
| FM Radio | Yes, with FM Recording | Yes |
| Speaker Type | Dual Stereo | |
| Document Reader | Yes | |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 6000 mAh, Li-ion Battery | 6500 mAh |
| Fast Charging | Yes, 45W SUPERVOOCTM Flash Charging | Yes, 44W |