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The realme P3 5G is the stronger fit if you prioritize a larger stated battery and higher dust-and-water ingress rating; the vivo Y400 Pro 5G offers faster rated charging, a larger screen and a higher-resolution selfie camera. Their prices need a fresh, variant-matched check: vivo’s published figures are launch prices from June 2025, while a 91mobiles page snapshot showed the P3 at ₹15,999 and the Y400 Pro out of stock.
realme P3 vs vivo Y400 Pro: key specifications
| Specification | realme P3 5G | vivo Y400 Pro 5G |
|---|---|---|
| Chipset | Snapdragon 6 Gen 4, as advertised by realme | MediaTek Dimensity 7300, listed by vivo |
| Display | 6.67-inch AMOLED, 120Hz, per 91mobiles | 6.77-inch AMOLED, 120Hz, per vivo and 91mobiles |
| Rear cameras | 50MP + 2MP, per 91mobiles | 50MP + 2MP, per 91mobiles |
| Front camera | 16MP, per 91mobiles | 32MP; vivo says front and rear cameras support 4K video |
| Battery | 6,000mAh, per realme | 5,500mAh, per vivo |
| Wired charging | 45W, per realme | 90W, per vivo |
| Ingress protection | IP69, per realme | IP65, per vivo |
| Listed software and memory | Not stated in the cited sources | Android 15 with Funtouch OS 15; 8GB RAM with 128GB or 256GB storage, per vivo |
Specifications come from the manufacturers or the cited comparison listing; they are not a controlled head-to-head test. Chipset names alone do not establish which phone performs better in everyday use or games. Likewise, megapixel counts do not determine photo quality, and battery capacity and charging wattage do not by themselves prove real-world endurance or charge times.
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Which phone has the better display?
Both are listed with 120Hz AMOLED panels, but the Y400 Pro’s 6.77-inch display is 0.10 inches larger than the P3’s 6.67-inch screen. That may suit someone who wants more screen area for video or reading; the P3’s smaller listed size may appeal if a less expansive handset is preferable. The figures do not establish differences in brightness or outdoor visibility under comparable test conditions.
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realme lists a 6,000mAh battery and 45W charging for the P3; vivo lists 5,500mAh and 90W for the Y400 Pro. On paper, the P3 has 500mAh more nominal capacity, while vivo rates the Y400 Pro’s charging power at twice the wattage. Neither comparison predicts how long a phone lasts or how quickly it charges in practice, which can vary with usage, temperature and charging conditions.
#1 Best Overall
- Dual-SIM, Network Compatibility, SIM CARD 1: [2G : GSM 850 / 900 / 1800 / 1900 and/or 3G : HSDPA 850(B5) / 900(B8) / 2100(B1) and/or 4G : FDD-LTE 700(B28) / 800(B5) / 800(B20) / 900(B8) / 1800(B3) / 2100(B1) / 2300(B40) / 2500(B41) / 2600(B7) / 2600(B38)]
- 6.67 inches, IPS LCD, 720 x 1604 pixels
- 256GB Storage, 8GB RAM, microSDXC (dedicated slot)
- Android 15, Unisoc T7250 (12 nm), Octa-core (2x1.8 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)
- 50 MP, f/1.8, 27mm (wide), 1/2.88", 5 MP, f/2.2, 27mm (wide), 1/5.0"
vivo says the Y400 Pro box includes a charger and case. Check the exact P3 variant’s box contents before buying accessories, rather than assuming they are included or missing.
Camera differences
Both phones are listed with 50MP and 2MP rear cameras. The Y400 Pro has the higher stated selfie-camera resolution: 32MP against the P3’s 16MP, with the P3 figure reported by 91mobiles. vivo also says the Y400 Pro supports 4K video recording on both front and rear cameras. These specifications do not establish which phone takes better photos or video; no controlled image comparison is available in the cited material.
IP69 vs IP65: what the ratings tell you
realme states an IP69 rating for the P3, while vivo lists IP65 for the Y400 Pro. These are different ingress-protection ratings, not a license to treat either phone as waterproof or expose it casually to water. vivo warns that the Y400 Pro’s resistance is not permanent and can decline through use, drops or impacts. Follow each manufacturer’s care guidance and do not rely on protection ratings to cover liquid damage.
Price difference in India: launch prices are not live offers
vivo announced these India launch prices for the Y400 Pro, which went on sale from 26 June 2025:
Rank #2
- 67 inches AMOLED 1080 x 2412 pixels Corning Gorilla Glass 5
- 256GB Stoage 8GB RAM
- Android 12 MediaTek Dimensity 8100 (5 nm) Octa-core (4x285 GHz Cortex-A78 & 4x20 GHz Cortex-A55)
- 50 MP f/19 24mm (wide) 1/156" 10m PDAF OIS 8 MP f/23 15mm 120˚ (ultrawide) 1/40" 112m 2 MP f/24 (macro) Front 16 MP f/25 26mm (wide) 1/309" 10m
| Y400 Pro configuration | Announced India launch price |
|---|---|
| 8GB RAM / 128GB storage | ₹24,999 |
| 8GB RAM / 256GB storage | ₹26,999 |
Those are historical launch prices, not a current quote. The announcement’s promotional offers were limited to June and July 2025 and should not be treated as available now. vivo said the phone was sold through its e-store, Flipkart, Amazon and retail partners.
A 91mobiles comparison page showed the realme P3 at ₹15,999 and the Y400 Pro out of stock in a page snapshot accessed in 2026. The P3’s storage variant was unclear, and this single snapshot is not a market-wide or current offer. It therefore cannot establish a reliable price gap between like-for-like phones. Before deciding, compare the same-day selling prices for the exact RAM and storage variants, confirm stock and seller, and check whether any discount is conditional.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Which one should you choose?
Choose the realme P3 if
- You value the larger stated battery capacity: 6,000mAh versus 5,500mAh.
- The listed IP69 rating is a priority, while recognizing it does not make the phone waterproof.
- Its verified live price for the storage variant you want is meaningfully lower than the Y400 Pro’s.
Choose the vivo Y400 Pro if
- You want the larger listed 6.77-inch display.
- You value its higher rated 90W charging and the included charger vivo specifies for the box.
- You want the higher-resolution listed selfie camera or vivo’s stated 4K front- and rear-camera recording support.
Do not choose on chipset names or camera megapixels alone: the cited specifications do not settle performance or image-quality comparisons. For a value decision, first confirm current stock and the price of the exact variants you are considering.
Sources and claims
- realme India: P3 5G product specifications
- vivo India: Y400 Pro specifications
- 91mobiles: realme P3 and vivo Y400 Pro comparison listing
- vivo India: Y400 Pro launch announcement and launch pricing
- vivo India: Y400 Pro design announcement
vivo’s design announcement describes the Nebula Purple Y400 Pro as 0.749cm thick and calls it the slimmest phone with a 3D curved display among phones launched in the ₹20,000–₹30,000 segment, based on vivo’s internal research as of 20 June 2025. This is a manufacturer claim with that stated segment and date, not an independent market-wide finding.
Quick Recap
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.
