Xiaomi Redmi 15 vs. Redmi Note 12R: A Deep Dive into Chipset and Battery Trade-offs
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🏆 Quick Verdict
For users prioritizing sustained performance and faster charging, the Xiaomi Redmi 15 is the clear winner. Its Snapdragon 6s Gen 3 offers a noticeable step up in CPU and GPU capabilities, complemented by 33W charging. However, the Redmi Note 12R provides a compelling alternative for those seeking a more power-efficient device.
| PHONES | ||
|---|---|---|
| Phone Names | Xiaomi Redmi 15 | Xiaomi Redmi Note 12R |
| Network | ||
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G bands | HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G bands | 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 32, 38, 40, 41, 42, 48, 66, 71 | 1, 3, 5, 8, 34, 38, 39, 40, 41 |
| 5G bands | 1, 2, 3, 5, 7, 8, 12, 20, 26, 28, 38, 40, 41, 48, 66, 77, 78, 71 SA/NSA | 1, 5, 8, 28, 41, 78 SA/NSA |
| Speed | HSPA, LTE, 5G | HSPA, LTE, 5G |
| Technology | GSM / HSPA / LTE / 5G | GSM / CDMA / HSPA / EVDO / LTE / 5G |
| Launch | ||
|---|---|---|
| Announced | 2025, August 01 | 2023, June 28 |
| Status | Available. Released 2025, August 01 | Available. Released 2023, June 28 |
| Body | ||
|---|---|---|
| Build | Glass front (Gorilla Glass 3), plastic frame, plastic back | Glass front, plastic frame, glass back |
| Dimensions | 169.5 x 80.5 x 8.4 mm (6.67 x 3.17 x 0.33 in) | 168.6 x 76.3 x 8.2 mm (6.64 x 3.00 x 0.32 in) |
| SIM | Nano-SIM + Nano-SIM | Nano-SIM + Nano-SIM |
| Weight | 217 g (7.65 oz) | 199 g (7.02 oz) |
| Display | ||
|---|---|---|
| Protection | Corning Gorilla Glass 3, Mohs level 6 | - |
| Resolution | 1080 x 2340 pixels, 19.5:9 ratio (~374 ppi density) | 1080 x 2460 pixels (~396 ppi density) |
| Size | 6.9 inches, 116.9 cm2 (~85.7% screen-to-body ratio) | 6.79 inches, 109.5 cm2 (~85.1% screen-to-body ratio) |
| Type | IPS LCD, 144Hz, 600 nits (typ), 700 nits (HBM), 850 nits (peak) | IPS LCD, 90Hz, 550 nits |
| Platform | ||
|---|---|---|
| CPU | Octa-core (2x2.3 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55) | Octa-core (2x2.2 GHz Cortex-A78 & 6x1.95 GHz Cortex-A55) |
| Chipset | Qualcomm SM6375 Snapdragon 6s Gen 3 (6 nm) | Qualcomm SM4450 Snapdragon 4 Gen 2 (4 nm) |
| GPU | Adreno 619 | Adreno 613 |
| OS | Android 15, HyperOS 2.2 | Android 13, MIUI 14 |
| Memory | ||
|---|---|---|
| Card slot | microSDXC (uses shared SIM slot) | microSDXC (uses shared SIM slot) |
| Internal | 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM | 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM |
| Main Camera | ||
|---|---|---|
| Dual | 50 MP, f/1.8, (wide), 1/2.88" 0.61μm, PDAF Auxiliary lens | 50 MP, f/1.8, (wide), PDAF 2 MP (macro) |
| Features | LED flash, HDR | LED flash, HDR |
| Video | 1080p@30fps | 1080p@30fps |
| Selfie camera | ||
|---|---|---|
| Features | HDR | HDR |
| Single | 8 MP, f/2.0, (wide) | 5 MP, f/2.2, (wide), 1/5.0", 1.12µm |
| Video | 1080p@30fps | 1080p@30fps |
| Sound | ||
|---|---|---|
| 35mm jack | No | Yes |
| Loudspeaker | Yes | Yes |
| Comms | ||
|---|---|---|
| Bluetooth | 5.1, A2DP, LE, aptX | 5.3, A2DP, LE |
| Infrared port | Yes | Yes |
| NFC | Yes (market/region dependent) | Yes (market/region dependent) |
| Positioning | GPS, GLONASS, GALILEO, BDS | GPS, GLONASS, GALILEO, BDS |
| Radio | No | No |
| USB | USB Type-C 2.0, OTG | USB Type-C |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct | Wi-Fi 802.11 a/b/g/n/ac, dual-band |
| Features | ||
|---|---|---|
| Sensors | Fingerprint (side-mounted), accelerometer, compass | Fingerprint (side-mounted), accelerometer, compass |
| Battery | ||
|---|---|---|
| Charging | 33W wired, PD 2.0, PPS, QC3 18W reverse wired | 18W wired, PD |
| Type | 7000 mAh | Li-Po 5000 mAh |
| Misc | ||
|---|---|---|
| Colors | Midnight Black, Titan Gray, Ripple Green | Black, Blue, Silver |
| Models | 25057RN09E | 23076RA4BC |
| Price | € 159.00 / $ 219.99 / £ 179.00 | About 150 EUR |
| SAR EU | 1.00 W/kg (head) 1.00 W/kg (body) | - |
| EU LABEL | ||
|---|---|---|
| Battery | 67:03h endurance, 1000 cycles | - |
| Energy | Class B | - |
| Free fall | Class D (45 falls) | - |
| Repairability | Class C | - |
Xiaomi Redmi 15
- More powerful Snapdragon 6s Gen 3 chipset
- Faster 33W charging with multiple protocols
- 18W reverse wired charging capability
- Potentially lower battery efficiency compared to the Note 12R
- Likely generates more heat under sustained load
Xiaomi Redmi Note 12R
- More power-efficient Snapdragon 4 Gen 2 chipset
- Potentially longer battery life
- Competitive price point
- Slower 18W charging
- Less powerful processor for demanding tasks
Display Comparison
Display specifications are absent from the provided data, but given the price points, both devices likely feature LCD panels with FHD+ resolution. The Redmi 15's stronger processor *could* translate to smoother scrolling and animations, but this is speculative. Bezels are likely comparable, and color accuracy will depend on software calibration, a common area for optimization in this segment.
Camera Comparison
Camera details are unavailable, but it's reasonable to assume both phones feature a multi-camera setup with a primary sensor. Without sensor size or aperture information, a direct comparison is impossible. However, the Redmi 15’s more powerful ISP (Image Signal Processor) within the Snapdragon 6s Gen 3 *could* result in slightly better image processing, particularly in low-light conditions. The presence of a dedicated ISP is a key advantage for the Redmi 15.
Performance
The core difference lies in the chipsets. The Redmi 15’s Snapdragon 6s Gen 3 (6nm) boasts a more powerful CPU configuration – 2x2.3 GHz Cortex-A78 cores alongside 6x2.0 GHz Cortex-A55 cores – compared to the Note 12R’s Snapdragon 4 Gen 2 (4nm) with 2x2.2 GHz Cortex-A78 and 6x1.95 GHz Cortex-A55 cores. While both utilize the same core architecture, the higher clock speeds of the 6s Gen 3 provide a tangible performance advantage. Crucially, the 4nm process of the Snapdragon 4 Gen 2 should yield better power efficiency, potentially offsetting the Redmi 15’s performance lead in certain scenarios. The Redmi 15 is likely to handle graphically intensive tasks and multitasking more smoothly.
Battery Life
The Redmi 15 claims an impressive 67:03h endurance based on testing, and a 1000 cycle lifespan, suggesting a robust battery management system. The Note 12R’s battery capacity is unknown, but its Snapdragon 4 Gen 2’s 4nm process should contribute to longer battery life per charge. However, the Redmi 15’s 33W wired charging (with PD 2.0, PPS, and QC3 support) significantly outperforms the Note 12R’s 18W charging. The Redmi 15 also offers 18W reverse wired charging, a feature absent on the Note 12R, allowing it to top up other devices.
Buying Guide
Buy the Xiaomi Redmi 15 if you need a phone capable of handling moderate gaming, multitasking, and benefit from faster charging speeds. This phone is ideal for users who frequently switch between apps or enjoy mobile games. Buy the Xiaomi Redmi Note 12R if you prioritize all-day battery life and a more streamlined user experience, and are less concerned with demanding tasks. It's a great choice for everyday communication, social media, and light content consumption.