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This comparison relies on published specifications and dated price observations in India. It does not include hands-on testing, benchmark results or battery-life measurements.
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Specifications side by side
| Feature | realme P4x 5G | realme 16x 5G | What the difference means |
|---|---|---|---|
| Chipset | MediaTek Dimensity 7400 Ultra, per launch and comparison sources | MediaTek Dimensity 6300, per the official realme India store listing | The P4x sits higher in the chipset line-up on paper. Real-world speed still needs a like-for-like test. |
| Display | 6.72-inch LCD, 1080×2400 FHD+, 144Hz | 6.81-inch LCD, 1570×720 HD+, up to 144Hz | The 16x screen is slightly larger, but the P4x has much higher listed resolution. |
| Battery | 7000mAh | 7000mAh (typical capacity as listed) | The listed capacity is identical. Capacity alone does not establish equal battery life. |
| Charging | 45W wired charging | 45W fast charging | The listed wattage matches. Charge times are not established by these figures. |
| Rear camera | 50MP primary plus 2MP mono, per comparison data | 50MP wide-angle, f/1.8, autofocus, per the official listing | Matching main-sensor megapixels do not establish matching image quality. |
| Front camera | 8MP | 8MP | Same listed resolution. No controlled camera comparison was found. |
| RAM and storage | 6GB and 8GB RAM options with 128GB storage shown on the comparison page; confirm the exact SKU | 4GB+128GB, 6GB+128GB and 6GB+256GB on the official listing | Prices are only comparable when the RAM and storage match. |
| Storage type | UFS 3.1, per comparison source | UFS 2.2, per official listing | The P4x uses the newer listed storage standard. |
| Software support | Android 15, two years of OS updates and three years of security updates, per comparison source | Not stated in the official listing reviewed here | Check realme’s current product page for the 16x before relying on update commitments. |
Display: bigger screen or sharper picture
The 16x offers about a tenth of an inch more diagonal, which is noticeable for video and browsing. Its listed 1570×720 resolution is HD+, though, while the P4x’s 1080×2400 FHD+ panel gives considerably more pixels per inch. Both are listed with 144Hz refresh, so the choice mostly depends on whether you value screen size or sharpness.
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The P4x’s Dimensity 7400 Ultra is listed above the 16x’s Dimensity 6300, and its UFS 3.1 storage is listed above the 16x’s UFS 2.2. These are published specifications, not measured performance. Gaming frame rates, thermal behaviour and app launch times depend on the software, cooling and the RAM variant you buy, and none of those are established here.
#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, charging and cameras
Both phones are listed with a 7000mAh battery and 45W charging, so on paper they should be close in endurance and charging capacity. Real battery life depends on screen resolution, workload and software optimisation, and the P4x’s higher resolution could use more power at the same brightness. The rear cameras both list a 50MP main sensor, but the P4x also lists a 2MP mono sensor and the 16x lists an f/1.8 aperture with autofocus. Neither listing establishes which phone produces better photos.
Price difference: what the observed figures show
Prices for these phones are not consistent across the sources reviewed, so there is no single difference to quote. The observations are:
- realme India store (16x): ₹28,999 for the Glory White 4GB+128GB configuration, shown on the official product page. The page also displays EMI and exchange offers whose eligibility can change. The date of this observation is not recorded in the source.
- 91mobiles comparison (both phones): ₹21,939 for the P4x and ₹25,999 for the 16x in one view. Another comparison result showed a different 16x price, so this figure should not be treated as final. The page is at 91mobiles’ realme P4x vs realme 16x 5G comparison.
- Gadgets 360 (P4x, Amazon): ₹23,473, observed on 2 October 2026. This is a dated retailer price, not a guaranteed current price. See the Gadgets 360 P4x price page.
Setting the Amazon P4x figure beside the official 16x figure would mix sellers, dates and configurations, so it does not show a true price gap. Before comparing, confirm that both phones are the same RAM and storage variant, sold by the same seller, on the same date, with the same offers applied.
Which one fits your priorities
Choose the P4x if
- Higher listed chipset tier and UFS 3.1 storage matter most to you.
- You want the sharper 1080×2400 FHD+ display.
- You can confirm the exact RAM and storage variant and find it at a comparable price.
This recommendation is based on published specifications rather than measured speed.
Rank #3
- 6.72 inches, IPS LCD, 1080 x 2400 pixels
- 128GB Storage, 4GB RAM
- Android 15, Realme UI 6.0, Mediatek Dimensity 7400 Ultra (4 nm), Octa-core (4x2.6 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
- Rear: 50 MP, f/1.8, (wide), PDAF, Auxiliary lens, Front: 8 MP, f/2.0, (wide)
- 165.9 x 76 x 8.4 mm (6.53 x 2.99 x 0.33 in), 208 g (7.34 oz)
Choose the 16x if
- You prefer the larger 6.81-inch screen and can accept HD+ resolution.
- A current same-variant offer on the official store or a retailer makes it cheaper.
- Your use is light and the Dimensity 6300 meets your needs.
Checklist before you buy
- Match the RAM and storage configuration exactly, for example 6GB+128GB on both.
- Record the seller, date and offer conditions, including EMI and exchange eligibility.
- Check the current software version and update policy on realme’s official product pages.
- Look for independent reviews before relying on camera, battery or performance claims.
realme’s official launch page for the P4x announces a 4 December launch date; see realme India’s P4x launch page.
Quick Recap
Rank #4
- 167.2 x 76.6 x 7.9 mm (6.58 x 3.02 x 0.31 in)
- 201 g (7.09 oz)
- 6.74 inches, IPS LCD, 720 x 1600 pixels
- 128GB Storage, 4GB RAM, microSDXC (uses shared SIM slot)
- Android 15, Realme UI 5.0, Unisoc T7250 (12 nm), Octa-core (2x1.8 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)
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.
