OPPO K13x 5G (8GB RAM +128GB) vs Vivo Y21 5G
Quick Comparison
OPPO K13x 5G (8GB RAM +128GB) has better RAM than Vivo Y21 5G. In terms of display resolution, OPPO K13x 5G (8GB RAM +128GB) has better resolution of 1604 x 720 than Vivo Y21 5G which has resolution of 1600 x 720. Both have the same amount of internal memory.
| Name | OPPO K13x 5G (8GB RAM +128GB) | Vivo Y21 5G |
| RAM | 8 GB | 4 GB |
|---|---|---|
| Display | 6.67 in | 6.74 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. 17874 | Rs. 18991 |
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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 (8GB RAM +128GB) is Rs. 17874. The launch Date of the second phone is March 26, 2026. The cost of Vivo Y21 5G is Rs. 18991.
Display comparison
Vivo Y21 5G has larger screen size of 6.74 inches in comparison to OPPO K13x 5G (8GB RAM +128GB)'s 6.67 inch screen. OPPO K13x 5G (8GB RAM +128GB) has Screen type where as Vivo Y21 5G has IPS Screen type. OPPO's phone has display density of 264 PPI & Vivo's phone has only 260 PPI display density. In terms of screen to body ratio, OPPO's phone has better screen to body ratio of ~ 89.9% than Vivo's phone ~ 85%. Both mobiles have same aspect ratio of 20:9.
Memory comparison
OPPO K13x 5G (8GB RAM +128GB)'s larger 8 GB RAM is better for playing games and all with respect to Vivo Y21 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. OPPO K13x 5G (8GB RAM +128GB) will be better choice if you're looking to click lot of selfies as it has better 8 MP Front Camera in comparison to Vivo Y21 5G's 5 MP Front Camera.
Technical comparison
Both the phones has Android Operating System but the first one runs on version 15 and the second one on 16 version.
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Full Comparison
| Name | OPPO K13x 5G (8GB RAM +128GB) | Vivo Y21 5G |
| General | ||
| Country of Origin | India | India |
| Model | K13x | Y21 5G |
| Sim Type | Dual Sim, GSM+GSM (Hybrid Slot) | Dual Sim, GSM+GSM |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | Nano+Nano SIM |
| Device Type | Smartphone | Smartphone |
| Release Date | June 23, 2025 | March 26, 2026 |
| In The Box | Handset, Charger, USB Data Cable, Sim Ejector Tool, Quick Guide, Protective Case | |
| Design | ||
| Dimensions | 76.2 x 165.7 x 7.9 mm | 77.1 x 167.4 x 8.4 mm |
| Weight | 194 g | 209 g |
| Colors | Midnight Violet | Champagne Gold, Midnight Blue |
| Display | ||
| Type | Color HD+ LCD (16.7 Million) | Color IPS Screen |
| Touch | Yes, 240 Hz Touch Sampling Rate | Yes |
| Size | 6.67 inches, 720 x 1604 pixels, 120 Hz | 6.74 inches, 720 x 1600 pixels, 120 Hz |
| Aspect Ratio | 20:9 | 20:9 |
| PPI | ~ 264 PPI | ~ 260 PPI |
| Screen to Body Ratio | ~ 89.9% | ~ 85% |
| Brightness | Brightness: 850nit (Normal), 1000nit (HBM) | 1200 nits Peak Brightness |
| 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 | 8 GB | 4 GB |
| Expandable RAM | Upto 4 GB Extra Virtual RAM | |
| Storage | 128 GB | 128 GB |
| Storage Type | UFS | eMMC 5.1 |
| Card Slot | Yes, (Hybrid Slot), upto 2 TB | Yes |
| 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 | n1/n3/n5/n8/n28B/n38/n40/n77/n78 |
| VoLTE | Yes | Yes |
| 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) | 2.4 GHz / 5 GHz |
| Bluetooth | Yes, v5.4, SBC, AAC, aptX, aptX HD, and LDAC | Yes |
| 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, USB Storage |
| IR Blaster | Yes | |
| Extra | ||
| GPS | Yes, BEIDOU, GPS, GLONASS, GALILEO, QZSS, AGPS | Yes, with A-GPS, GLONASS, GALILEO, BDS, QZSS |
| Fingerprint Sensor | Yes, Side | Yes, Side |
| Face Unlock | Yes | Yes |
| Sensors | Proximity Sensor, Ambient Light Sensor, E-Compass, Accelerometer | Accelerometer, Proximity, Compass |
| 3.5mm Headphone Jack | Yes | Yes |
| NFC | 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 | AI Creation, AI Photo Enhance, AI Documents, AI Screen Translation, Circle to Search |
| Water Resistance | 1.18 m upto 1.05 min | Yes |
| Splash Resistant | Yes | |
| IP Rating | IP65 | IP65 |
| Dust Resistant | Yes | 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 ƒ/1.8 (Wide Angle) 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 | 5 MP ƒ/2.2 (Wide Angle) |
| Front Video Recording | 1080p @ 30 fps FHD, 720p @ 30 fps HD | |
| Technical | ||
| OS | Android v15 | Android v16 |
| Custom UI | ColorOS 15 | OriginOS 6 |
| Chipset | Mediatek Dimensity 6300 | Mediatek Dimensity 6300 |
| CPU | 2.4 GHz, Octa Core Processor | 2.4 GHz, Octa Core Processor |
| Core Details | 2X Arm Cortex-A76@2.4GHz & 6X Arm Cortex-A55@2.0GHz | 2X Arm Cortex-A76@2.4GHz & 6X Arm Cortex-A55@2.0GHz |
| GPU | ARM Mali-G57 MC2 | Mali-G57 MC2 |
| Java | No | No |
| Browser | Yes | Yes |
| Multimedia | ||
| Yes | Yes | |
| Music | MP3, AAC, AMR, APE, OGG, FLAC, WAV, MIDI, WMA | Yes |
| Video | AVI, 3GP, MP4, WMV, MKV, MOV, ASF, FLV, Webm, TS | Yes |
| FM Radio | Yes, with FM Recording | No |
| Document Reader | Yes | Yes |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 6000 mAh, Li-ion Battery | 6500 mAh, Li-ion Battery |
| Fast Charging | Yes, 45W SUPERVOOCTM Flash Charging | Yes, 44W Fast Charging |
| Reverse Charging | Yes | |