Vivo Y21 5G (8GB RAM + 128GB) vs Xiaomi Redmi 15 5G
Quick Comparison
Vivo Y21 5G (8GB RAM + 128GB) has better RAM than Xiaomi Redmi 15 5G. In terms of display resolution, Xiaomi Redmi 15 5G has better resolution of 2340 x 1080 than Vivo Y21 5G (8GB RAM + 128GB) which has resolution of 1600 x 720. Both have the same amount of internal memory.
| Name | Vivo Y21 5G (8GB RAM + 128GB) | Xiaomi Redmi 15 5G |
| RAM | 8 GB | 6 GB |
|---|---|---|
| Display | 6.74 in | 6.9 in |
| Internal Memory | 128 GB | 128 GB |
| Battery | 6500 mAh | 7000 mAh |
| Camera | 50 MP + 0.08 MP Dual | 50 MP Dual |
| Price | Rs. 22991 | Rs. 21499 |
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Detailed Comparison
Price And Launch
The launch Date of the first phone is March 26, 2026. The cost of Vivo Y21 5G (8GB RAM + 128GB) is Rs. 22991. The launch Date of the second phone is August 01, 2025. The cost of Xiaomi Redmi 15 5G is Rs. 21499.
Display comparison
Xiaomi Redmi 15 5G has larger screen size of 6.9 inches in comparison to Vivo Y21 5G (8GB RAM + 128GB)'s 6.74 inch screen. Both the phones have IPS Screen Type. Xiaomi's phone has display density of 374 PPI & Vivo's phone has only 260 PPI display density. In terms of screen to body ratio, Vivo's phone has better screen to body ratio of ~ 85% than Xiaomi's phone ~ 83.2%. Vivo Y21 5G (8GB RAM + 128GB) has 20:9 aspect ratio where as Xiaomi Redmi 15 5G has 20.6:9 aspect ratio.
Memory comparison
Vivo Y21 5G (8GB RAM + 128GB)'s larger 8 GB RAM is better for playing games and all with respect to Xiaomi Redmi 15 5G's lower 6 GB RAM. and both have same Internal Memory of 128 GB.
Camera comparison
They both have the same 50 MP + 0.08 MP Dual Rear Camera. Xiaomi Redmi 15 5G 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 (8GB RAM + 128GB)'s 5 MP Front Camera.
Technical comparison
Both the phones has Android Operating System but the first one runs on version 16 and the second one on 15 version.
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Full Comparison
| Name | Vivo Y21 5G (8GB RAM + 128GB) | Xiaomi Redmi 15 5G |
| General | ||
| Country of Origin | India | India |
| Model | Y21 5G | 15 5G |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM (Hybrid Slot) |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | Nano+Nano SIM |
| Device Type | Smartphone | Smartphone |
| OS Updates | 2 years | |
| Security Updates | 4 years | |
| Release Date | March 26, 2026 | August 01, 2025 |
| In The Box | Mobile Phone * 1, Adapter * 1, USB Type-C cable * 1, SIM Eject Tool * 1, Quick Start Guide, & Warranty Card * 1, Safety Information * 1 | |
| Design | ||
| Dimensions | 77.1 x 167.4 x 8.4 mm | 80.45 x 168.48 x 8.4 mm |
| Weight | 209 g | 217 g |
| Colors | Champagne Gold, Midnight Blue | Sandy Purple, Frosted White, Midnight Black |
| Display | ||
| Type | Color IPS Screen | Color IPS Screen (16M Colors) |
| Touch | Yes | Yes, 288 Hz Touch Sampling Rate |
| Size | 6.74 inches, 720 x 1600 pixels, 120 Hz | 6.9 inches, 1080 x 2340 pixels, 144 Hz |
| Aspect Ratio | 20:9 | 20.6:9 |
| PPI | ~ 260 PPI | ~ 374 PPI |
| Screen to Body Ratio | ~ 85% | ~ 83.2% |
| Brightness | 1200 nits Peak Brightness | 850nits Peak Brightness |
| Features | TÜV Rheinland Circadian Friendly, TÜV Rheinland flicker free, TÜV Rheinland Low Blue light | |
| Notch | Yes, Water Drop Notch | Yes, Punch Hole |
| Memory | ||
| RAM | 8 GB | 6 GB |
| RAM Type | LPDDR4X | |
| Expandable RAM | Upto 8 GB Extra Virtual RAM | |
| Storage | 128 GB | 128 GB |
| Storage Type | eMMC 5.1 | UFS 2.2 |
| Card Slot | Yes | Yes, (Hybrid Slot), upto 1 TB |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | Yes |
| 5G Bands | n1/n3/n5/n8/n28B/n38/n40/n77/n78 | SA: n1/n3/n5/n8/n28/n40/n78, NSA: n1/n3/n40/n78/n8 |
| VoLTE | Yes | Yes |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Wifi Version | 2.4 GHz / 5 GHz | |
| Bluetooth | Yes | Yes, v5.1, A2DP, LE |
| USB | Yes, USB-C v2.0 | Yes, USB-C |
| USB Features | USB Tethering, USB on-the-go, USB Charging, USB Storage | USB on-the-go, USB Charging |
| IR Blaster | Yes | Yes |
| Extra | ||
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS, QZSS | Yes, with A-GPS, Glonass, Beidou |
| Fingerprint Sensor | Yes, Side | Yes, Side |
| Face Unlock | Yes | Yes |
| Sensors | Accelerometer, Proximity, Compass | Ambient Light Sensor, Proximity Sensor (Virtual), E Compass, Accelerometer |
| 3.5mm Headphone Jack | Yes | |
| NFC | Yes | |
| AI Features | AI Creation, AI Photo Enhance, AI Documents, AI Screen Translation, Circle to Search | Circle to Search, Gemini AI, AI Erase |
| Water Resistance | Yes | |
| Splash Resistant | Yes | |
| IP Rating | IP65 | IP64 |
| Dust Resistant | Yes | Yes |
| Extra Features | Hydro Touch | |
| Camera | ||
| Rear Camera | 50 MP ƒ/1.8 (Wide Angle) 0.08 MP | 50 MP ƒ/1.75 (Wide Angle) |
| Auto Focus | Yes | Yes |
| Features | AI Sky, AI Erase, Classic Film Filters | |
| Video Recording | 1080p @ 30 fps FHD | 1080p @ 30 fps FHD |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 5 MP ƒ/2.2 (Wide Angle) | 8 MP ƒ/2.2 (Wide Angle) Punch Hole, Screen Flash |
| Front Video Recording | 1080p @ 30 fps FHD | |
| Front Camera Features | Photo, Night, Portrait, Video, Live Photo | HDR |
| Technical | ||
| OS | Android v16 | Android v15 |
| Custom UI | OriginOS 6 | HyperOS 2 |
| Chipset | Mediatek Dimensity 6300 | Qualcomm Snapdragon 6s Gen3 |
| CPU | 2.4 GHz, Octa Core Processor | 2.3 GHz, Octa Core Processor |
| Core Details | 2X Arm Cortex-A76@2.4GHz & 6X Arm Cortex-A55@2.0GHz | 2x2.3 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55 |
| GPU | Mali-G57 MC2 | Adreno 619 |
| Java | No | No |
| Browser | Yes | Yes, supports HTML5 |
| Multimedia | ||
| Yes | Yes | |
| Music | Yes | Yes |
| Video | Yes | Yes |
| FM Radio | No | Yes |
| Speaker Type | Bottom Firing Loud Speaker | |
| Audio Features | Dolby Certified, 200% Super Volume | |
| Document Reader | Yes | Yes |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 6500 mAh, Li-ion Battery | 7000 mAh, Si-C EV-Grade Technology |
| Fast Charging | Yes, 44W Fast Charging | Yes, 33W |
| Reverse Charging | Yes | Yes, 18W |