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The realme C83 5G prioritizes a larger 7,000mAh typical battery and a display rated up to 144Hz; the vivo Y21 5G lists a 50MP main camera and charging up to 44W. Both are listed with a MediaTek Dimensity 6300 chipset. A comparison page showed the realme at ₹19,999 and the vivo at ₹21,649 on Amazon India when accessed on October 7, 2026, but those are changing marketplace prices, not guaranteed offers or confirmed like-for-like variant prices.
realme C83 5G vs vivo Y21 5G: key specifications
| Specification | realme C83 5G | vivo Y21 5G |
|---|---|---|
| Chipset | MediaTek Dimensity 6300, according to realme India | Dimensity 6300, as listed by 91mobiles |
| RAM and storage options | 4GB or 6GB RAM; 64GB or 128GB storage, according to realme India | 4GB, 6GB or 8GB RAM and 128GB storage, according to 91mobiles |
| Display | 6.8-inch HD+ LCD; refresh rate up to 144Hz, according to realme India | 6.74-inch HD+ LCD; refresh rate up to 120Hz, according to vivo Global |
| Rear cameras | 13MP, according to realme India | 50MP main and 0.08MP auxiliary, according to vivo Global |
| Front camera | 5MP, according to realme India | 5MP, according to 91mobiles |
| Battery capacity | 7,000mAh typical, according to realme India | 6,500mAh typical and 6,355mAh rated, according to vivo India |
| Maximum charging rate | 15W, according to realme India | Up to 44W FlashCharge with vivo’s standard charger, according to vivo India |
| Observed Amazon India price | ₹19,999, as displayed by 91mobiles on October 7, 2026 | ₹21,649, as displayed by 91mobiles on October 7, 2026 |
How their screens and performance compare
The manufacturer specifications list a Dimensity 6300 for the realme C83 5G, while 91mobiles lists the same chipset for the vivo Y21 5G. That shared model name does not prove identical performance in every task, and no controlled head-to-head benchmark is established by these sources.
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Both phones have HD+ LCDs. The realme screen is listed as 6.8 inches with a maximum refresh rate of 144Hz; vivo Global lists a 6.74-inch screen with up to 120Hz. The realme therefore has the higher stated refresh-rate ceiling and slightly larger display. Maximum refresh rates are specifications, not a guarantee that every app or use scenario will run at that rate.
Camera: resolution is not the whole picture
The vivo Y21 5G lists a 50MP main rear camera and a 0.08MP auxiliary camera on its global feature page. The realme C83 5G lists a 13MP rear camera. Both are listed with 5MP front cameras. These figures distinguish sensor resolution, but they do not establish which phone takes better photos: image processing, lens and sensor characteristics, and shooting conditions also matter, and the cited specifications are not a camera test.
#1 Best Overall
- 144Hz High Refresh Rate Large Display – Equipped with a 6.8-inch high-definition LCD screen featuring a 144Hz ultra-smooth refresh rate, delivering fluent visual experience for daily browsing, video watching, gaming and social media. The large screen brings wider field of view and comfortable single-hand operation, effectively reducing screen stutter and eye fatigue during long-time use.
- 6600mAh Giant Battery & 45W Ultra Fast Charge – Built-in 6600mAh high-capacity durable battery supports all-day long-lasting battery life, easily meeting heavy usage needs of gaming, video playback and outdoor travel. 45W ultra-fast charging technology greatly shortens charging time, quickly replenishes power and eliminates low-battery anxiety for daily use.
- Powerful Dimensity 6300 5G Processor – Adopts MediaTek Dimensity 6300 high-performance 5G chip, with optimized operation algorithm and excellent heat dissipation performance. It ensures stable and smooth running of daily office apps, social software and mainstream mobile games, while supporting 5G full-network fast connection for ultra-fast downloading and network surfing.
- 50MP AI Dual Camera System – Comes with a 50MP high-definition rear main camera and 5MP front selfie camera. The intelligent AI imaging algorithm optimizes light, color and details automatically, enabling clear and vivid photos in bright daylight or low-light night environment. It supports portrait mode, panorama and multiple shooting modes to record wonderful moments easily.
- IP64 Waterproof & Dustproof & Practical Design – Features IP64 professional waterproof and dustproof rating, effectively resisting daily splashing water, sweat and fine dust, improving the phone’s durability and extending service life. Unlocked design supports global mainstream network bands, compatible with various operators, perfect for daily communication, travel and outdoor scenarios.
Battery capacity and charging
realme specifies a 7,000mAh typical battery and maximum 15W charging for the C83 5G. vivo India specifies 6,500mAh typical capacity and 6,355mAh rated capacity for the Y21 5G, with up to 44W FlashCharge using vivo’s standard charger. The stated capacities favor realme, while the listed peak charging rate favors vivo. No directly comparable runtime test is established, and maximum charging rates alone do not predict how long a full charge will take in ordinary use.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Price difference in the observed India listings
On October 7, 2026, 91mobiles displayed Amazon India prices of ₹19,999 for the realme C83 5G and ₹21,649 for the vivo Y21 5G—a ₹1,650 difference, with the vivo listed higher. These are marketplace observations, not stable manufacturer prices. The comparison does not establish that the listings had identical RAM and storage, sellers, stock or delivery terms. Before deciding which offers better value, check the live listing and compare the exact configuration and purchase conditions.
Rank #2
- NOTE: Global Version. No Warranty. This device is globally unlocked and ready to be used with your preferred Carrier. SIM CARD NOT INCLUDED. Please confirm device compatibility with your service provider before placing your order.
- Supported Network Bands: 5G/4G/3G/2G. Please note that 5G requires the support of local telecom operator services and may not be available in all regions. Please check with your service provider to see if 5G is offered in your area.
- Storage: 1TB 16GB RAM
- Display: 6.74 inches, 109.2 cm2 (~87.9% screen-to-body ratio)
- Platform: Android 13, Realme UI 4.0 Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)
Box contents and purchase checks
vivo India says the Y21 5G package includes a charger, USB cable, case, eject tool and pre-applied protective film. The realme specification page cited here does not establish the C83 5G’s box contents, so confirm them with the seller or the exact regional package listing.
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- Check the RAM and storage configuration for the exact price shown; the listed options differ.
- For the vivo’s stated peak charging rate, confirm the charger included with the particular package and follow vivo’s charger qualification.
- Confirm availability and delivery terms at checkout because marketplace stock and prices can change.
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.
