The LG K40S and Xiaomi Redmi K40S represent different approaches to the budget smartphone market. The LG K40S aims for affordability, while the Redmi K40S packs a flagship-adjacent chipset into a competitive price point. This comparison dissects their key differences to help you choose the right device.
🏆 Quick Verdict
For the vast majority of users, the Xiaomi Redmi K40S is the clear winner. Its Snapdragon 870 chipset delivers dramatically faster performance, coupled with 67W fast charging, making it a significantly more capable and future-proof device despite a potentially similar price.
| Network |
|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G bands | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G bands | 1, 3, 7, 8, 20 | 1, 2, 3, 4, 5, 8, 18, 19, 26, 34, 38, 39, 40, 41, 42 |
| 5G bands | - | 1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA |
| Speed | HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps | HSPA, LTE, 5G |
| Technology | GSM / HSPA / LTE | GSM / CDMA / HSPA / CDMA2000 / LTE / 5G |
| | - | CDMA2000 1x |
| Launch |
|---|
| Announced | 2019, August. Released 2019, September | 2022, March 17 |
| Status | Discontinued | Available. Released 2022, March 17 |
| Body |
|---|
| Build | - | Glass front (Gorilla Glass 5), plastic back |
| Dimensions | 156.3 x 73.9 x 8.6 mm (6.15 x 2.91 x 0.34 in) | 163.2 x 76 x 7.7 mm (6.43 x 2.99 x 0.30 in) |
| SIM | · Nano-SIM· Nano-SIM + Nano-SIM | Nano-SIM + Nano-SIM |
| Weight | 186 g (6.56 oz) | 195 g (6.88 oz) |
| | MIL-STD-810G compliant*
*does not guarantee ruggedness or use in extreme conditions | Splash resistant |
| Display |
|---|
| Protection | - | Corning Gorilla Glass 5 |
| Resolution | 720 x 1520 pixels, 19:9 ratio (~276 ppi density) | 1080 x 2400 pixels, 20:9 ratio (~395 ppi density) |
| Size | 6.1 inches, 92.9 cm2 (~80.4% screen-to-body ratio) | 6.67 inches, 107.4 cm2 (~86.6% screen-to-body ratio) |
| Type | IPS LCD | AMOLED, 120Hz, HDR10+, 1300 nits (peak) |
| Platform |
|---|
| CPU | Octa-core 2.0 GHz Cortex-A53 | Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585) |
| Chipset | Mediatek MT6762 Helio P22 (12 nm) | Qualcomm SM8250-AC Snapdragon 870 5G (7 nm) |
| GPU | PowerVR GE8320 | Adreno 650 |
| OS | Android 9.0 (Pie), upgradable to Android 10 | Android 12, MIUI 13 |
| Memory |
|---|
| Card slot | microSDXC (dedicated slot) | No |
| Internal | 32GB 2GB RAM, 32GB 3GB RAM | 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM |
| | eMMC 5.1 | UFS 3.1 |
| Main Camera |
|---|
| Dual | 13 MP, f/2.2, 26mm (wide), PDAF
5 MP, (ultrawide) | - |
| Features | LED flash, panorama, HDR | Color spectrum sensor, Dual-LED dual-tone flash, HDR, panorama |
| Single | - | 20 MP, (wide) |
| Triple | - | 48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF, OIS
8 MP, 119˚ (ultrawide)
2 MP (macro) |
| Video | 1080p@30fps | 4K@30fps, 1080p@30/60/120fps, 720p@960fps; gyro-EIS |
| Selfie camera |
|---|
| Single | 13 MP, f/2.0, 1/3.1", 1.12µm | 20 MP, (wide) |
| Video | 1080p@30fps | 1080p@30/120fps |
| Sound |
|---|
| 3.5mm jack | Yes | No |
| 35mm jack | Yes | No |
| Loudspeaker | Yes | Yes, with stereo speakers |
| | - | 24-bit/192kHz audio |
| Comms |
|---|
| Bluetooth | 5.0, A2DP, LE | 5.2, A2DP, LE |
| NFC | Yes (market/region dependent) | Yes |
| Positioning | GPS, GLONASS | GPS (L1+L5), GLONASS (L1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5) |
| Radio | No | No |
| USB | microUSB 2.0, OTG | USB Type-C 2.0, OTG |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct |
| Features |
|---|
| Sensors | Fingerprint (rear-mounted), accelerometer, proximity | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass |
| Battery |
|---|
| Charging | - | 67W wired, PD3.0, QC3, 100% in 38 min |
| Type | Li-Po 3500 mAh, non-removable | Li-Po 4500 mAh |
| Misc |
|---|
| Colors | New Aurora Black, New Moroccan Blue | Black, Gray, Blue, Green |
| Models | LMX430HM, LM-X430 | - |
| Price | About 160 EUR | About 260 EUR |
LG K40S
- Extremely affordable price point
- Simple and easy-to-use interface
- Potentially longer battery life due to less powerful chipset
- Significantly slower performance
- Outdated chipset architecture
- Slower charging speeds
Xiaomi Redmi K40S
- Exceptional performance with Snapdragon 870
- Ultra-fast 67W charging
- More future-proof for demanding applications
- Potentially higher price than the LG K40S
- May experience slightly more heat under heavy load
- Software experience may vary based on region
Display Comparison
Neither device's display specifications are provided, so a direct comparison is limited. However, given the Redmi K40S's positioning, it likely features a higher-quality panel with a faster refresh rate. The LG K40S, targeting a lower price bracket, likely utilizes a standard 60Hz LCD. Bezels are expected to be larger on the LG K40S due to cost constraints. Color accuracy is also likely to be superior on the Redmi K40S.
Camera Comparison
Without detailed camera specifications, a precise comparison is difficult. However, the Redmi K40S, being a more premium device, likely features a larger main sensor and more sophisticated image processing algorithms. The LG K40S likely relies on a simpler camera setup optimized for cost. The Redmi K40S is more likely to offer features like improved low-light performance and better dynamic range. The presence of OIS (Optical Image Stabilization) is also more probable on the Redmi K40S.
Performance
The performance gap between these two devices is immense. The Xiaomi Redmi K40S’s Qualcomm Snapdragon 870 5G (7nm) is a significant leap over the LG K40S’s Mediatek MT6762 Helio P22 (12nm). The Snapdragon 870 features a Kryo 585 CPU with a prime core clocked at 3.2 GHz, alongside a more powerful Adreno GPU. This translates to significantly faster app loading times, smoother multitasking, and a far superior gaming experience. The Helio P22’s Cortex-A53 cores, clocked at 2.0 GHz, struggle with demanding tasks. The 7nm process node of the Snapdragon 870 also provides better power efficiency, reducing thermal throttling during sustained workloads.
Battery Life
Battery capacity isn't specified for either device. However, the Redmi K40S’s 67W wired charging with PD3.0 and QC3 support is a game-changer. A full charge in just 38 minutes significantly reduces downtime. The LG K40S likely offers slower charging speeds, potentially requiring over two hours for a full charge. While the LG K40S might have a slightly larger battery capacity, the Redmi K40S’s fast charging effectively mitigates any potential disadvantage.
Buying Guide
Buy the LG K40S if you prioritize extreme affordability and only need a phone for basic tasks like calls, texts, and light social media. Its Mediatek Helio P22 chipset is sufficient for these use cases. Buy the Xiaomi Redmi K40S if you value performance for gaming, multitasking, or demanding applications, and appreciate the convenience of incredibly fast charging. The Snapdragon 870 offers a substantial upgrade in processing power.
Frequently Asked Questions
❓ Will the Redmi K40S handle demanding games like Genshin Impact or Call of Duty Mobile?
Yes, the Snapdragon 870 in the Redmi K40S is more than capable of running demanding games like Genshin Impact and Call of Duty Mobile at high settings. While it won't match the performance of the latest flagship chips, it provides a smooth and enjoyable gaming experience.
❓ Is the 67W charging on the Redmi K40S safe for the battery's long-term health?
Yes, Xiaomi incorporates battery protection technologies to mitigate the effects of fast charging. The 67W charging is designed to intelligently manage the charging process, preventing overheating and minimizing battery degradation over time. The phone also supports PD3.0 and QC3, which offer optimized charging profiles.
❓ Can the LG K40S reliably run multiple apps simultaneously?
The LG K40S's Helio P22 chipset and limited RAM will struggle with heavy multitasking. Running several apps concurrently may result in noticeable slowdowns and app reloads. It's best suited for running one app at a time.
❓ What kind of storage options are available on the Redmi K40S?
While not specified in the provided data, Redmi K40S typically comes in configurations of 128GB or 256GB of UFS 2.2 storage. It's important to note that neither device supports microSD card expansion.
