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Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →The choice comes down to two different strengths: the realme P4x pairs a listed 144Hz LCD with a larger 7000mAh battery, while the Xiaomi Redmi Note 15 SE 5G has a curved AMOLED display, a 20MP selfie camera and longer software-support durations reported by a comparison database. In a 91mobiles snapshot accessed on October 4, 2026, the Redmi was listed ₹2,761 higher, but the prices are volatile and the compared configurations may not match.
realme P4x vs Redmi Note 15 SE 5G: key specifications
| Specification | realme P4x 5G | Xiaomi Redmi Note 15 SE 5G |
|---|---|---|
| Chipset | MediaTek Dimensity 7400 Ultra (realme India launch material: realme) | Qualcomm Snapdragon 6 Gen 3; 4nm process, CPU up to 2.4GHz (Xiaomi India: Xiaomi) |
| Display | 6.72-inch LCD, listed at 144Hz (91mobiles comparison: 91mobiles) | 6.77-inch curved AMOLED, 2392 × 1080, up to 120Hz (Xiaomi India) |
| Rear cameras | 50MP main + 2MP monochrome (91mobiles) | 50MP Light Fusion 400 main + 2MP depth (Xiaomi India) |
| Front camera | 8MP (91mobiles) | 20MP (Xiaomi India) |
| Battery and charging | 7000mAh battery (realme India); 45W charging listed by 91mobiles | 5800mAh typical capacity; 45W Turbo Charging, charger in the box (Xiaomi India) |
| RAM and storage | 128GB or 256GB storage listed; UFS 3.1 (91mobiles). RAM configurations not stated there. | 6GB+128GB, 8GB+128GB or 8GB+256GB; LPDDR4X and UFS 2.2 (Xiaomi India) |
| Expandable storage | Not stated by 91mobiles | microSD up to 1TB through a hybrid nano-SIM/microSD slot; card compatibility may vary (Xiaomi India) |
| Software and update durations | Android 15; two OS years and three security years, as reported by 91mobiles | HyperOS 3 with Android 15; four OS years and six security years, as reported by 91mobiles |
Sources: realme India launch material, Xiaomi India specifications and the 91mobiles comparison. The comparison database supplies several P4x details not specified in the cited realme launch material, and update-duration figures here are third-party listings rather than a verified manufacturer support guarantee.
Which phone has the better display?
The P4x has the higher listed refresh rate, 144Hz, but uses an LCD. The Redmi’s curved AMOLED panel reaches 120Hz. A higher refresh-rate figure is not the only factor in display preference: decide whether you value the Redmi’s AMOLED panel and curved design or the P4x’s higher listed refresh rate. The specifications alone do not establish which screen looks better to you.
Battery and charging: larger capacity is not a runtime test
realme describes the P4x as having a 7000mAh battery; Xiaomi lists the Redmi at 5800mAh typical capacity. Both phones are listed with 45W charging, although Xiaomi calls its implementation 45W Turbo Charging and says the charger is included in the box. Capacity figures do not establish which phone lasts longer in everyday use; that depends on usage and testing conditions.
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- 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.
Performance: compare the platforms, not just clock speeds
The P4x uses MediaTek’s Dimensity 7400 Ultra, while the Redmi uses Qualcomm’s Snapdragon 6 Gen 3. Xiaomi specifies a 4nm process and CPU speeds up to 2.4GHz; 91mobiles lists the P4x at up to 2.6GHz. Clock speed alone is not a reliable comparison of overall speed, gaming performance or efficiency. No comparable benchmark evidence is established here, so choose based on the platform specifications rather than treating either clock figure as proof of a performance winner.
Cameras: the Redmi has more selfie-camera resolution
Both phones are listed with a 50MP main rear camera. The Redmi adds a 2MP depth camera and has a 20MP front camera; the P4x is listed with a 2MP monochrome rear camera and an 8MP front camera. Those resolution figures describe hardware, not photo quality. Image processing, lens and sensor behavior, and real sample photos matter; megapixel counts alone cannot identify the better camera.
Storage and software support
Storage options
Xiaomi officially lists the Redmi in 6GB+128GB, 8GB+128GB and 8GB+256GB configurations. It supports microSD cards up to 1TB using a hybrid SIM/microSD slot, so using a card may affect how you use that tray. Xiaomi cautions that memory-card compatibility can vary. 91mobiles lists 128GB and 256GB P4x variants and UFS 3.1 storage, compared with UFS 2.2 for the Redmi; check the exact retail SKU before using storage type as a deciding factor.
Update durations
91mobiles reports two OS years and three security years for the P4x, versus four OS years and six security years for the Redmi. These are third-party comparison figures; confirm the current manufacturer support policy for the exact model before treating them as guaranteed update commitments.
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- 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)
Price difference in India
In the 91mobiles comparison snapshot accessed October 4, 2026, the displayed Amazon prices were ₹21,939 for the realme P4x and ₹24,700 for the Redmi Note 15 SE 5G, a difference of ₹2,761. These are snapshot listings, not manufacturer prices or guaranteed live offers. The page figures do not establish matched RAM and storage configurations, and prices can change; compare the live listings for the same configuration before deciding which costs less.
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.
