Xiaomi Redmi K40S vs Poco F3: The Ultimate Showdown

Xiaomi consistently delivers impressive value, and the Redmi K40S and Poco F3 are prime examples. Both pack the powerful Snapdragon 870 chipset, but cater to slightly different audiences. This comprehensive comparison will help you decide which phone is the right fit for you.
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🏆 Quick Verdict

The Redmi K40S edges out the Poco F3 thanks to its significantly faster charging and potentially improved camera capabilities (though both are good). However, the Poco F3 boasts exceptional battery life and a slightly more aggressive price point, making it a strong contender for budget-conscious buyers.

PHONES
Phone Names Xiaomi Redmi K40S Xiaomi Poco F3
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 2, 3, 4, 5, 8, 18, 19, 26, 34, 38, 39, 40, 41, 421, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 38, 40, 41, 66
5G bands1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA1, 3, 5, 7, 8, 20, 28, 38, 41, 77, 78 SA/NSA
SpeedHSPA, LTE, 5GHSPA, LTE, 5G
TechnologyGSM / CDMA / HSPA / CDMA2000 / LTE / 5GGSM / HSPA / LTE / 5G
 CDMA2000 1x -
Launch
Announced2022, March 172021, March 22
StatusAvailable. Released 2022, March 17Available. Released 2021, March 27
Body
BuildGlass front (Gorilla Glass 5), plastic backGlass front (Gorilla Glass 5), glass back (Gorilla Glass 5), plastic frame
Dimensions163.2 x 76 x 7.7 mm (6.43 x 2.99 x 0.30 in)163.7 x 76.4 x 7.8 mm (6.44 x 3.01 x 0.31 in)
SIMNano-SIM + Nano-SIMNano-SIM + Nano-SIM
Weight195 g (6.88 oz)196 g (6.91 oz)
 Splash resistantIP53, dust and splash resistant
Display
ProtectionCorning Gorilla Glass 5Corning Gorilla Glass 5
Resolution1080 x 2400 pixels, 20:9 ratio (~395 ppi density)1080 x 2400 pixels, 20:9 ratio (~395 ppi density)
Size6.67 inches, 107.4 cm2 (~86.6% screen-to-body ratio)6.67 inches, 107.4 cm2 (~85.9% screen-to-body ratio)
TypeAMOLED, 120Hz, HDR10+, 1300 nits (peak)AMOLED, 120Hz, HDR10+, 1300 nits (peak)
Platform
CPUOcta-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585)Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585)
ChipsetQualcomm SM8250-AC Snapdragon 870 5G (7 nm)Qualcomm SM8250-AC Snapdragon 870 5G (7 nm)
GPUAdreno 650Adreno 650
OSAndroid 12, MIUI 13Android 11, upgradable to Android 13, HyperOS
Memory
Card slotNoNo
Internal128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM
 UFS 3.1UFS 3.1
Main Camera
FeaturesColor spectrum sensor, Dual-LED dual-tone flash, HDR, panoramaColor spectrum sensor, LED flash, HDR, panorama
Single20 MP, (wide)20 MP, f/2.5, (wide), 1/3.4", 0.8µm
Triple48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF, OIS 8 MP, 119˚ (ultrawide) 2 MP (macro)48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 119˚ (ultrawide) 5 MP, f/2.4, 50mm (macro), AF
Video4K@30fps, 1080p@30/60/120fps, 720p@960fps; gyro-EIS4K@30fps, 1080p@30/60/120/240/960fps, gyro-EIS
Selfie camera
Features-HDR
Single20 MP, (wide)20 MP, f/2.5, (wide), 1/3.4", 0.8µm
Video1080p@30/120fps1080p@30/60fps, 720p@120fps
Sound
3.5mm jack NoNo
35mm jackNoNo
Loudspeaker Yes, with stereo speakersYes, with stereo speakers
 24-bit/192kHz audio24-bit/192kHz audio
Comms
Bluetooth5.2, A2DP, LE5.1, A2DP, LE
Infrared port-Yes
NFCYesYes (market/region dependent)
PositioningGPS (L1+L5), GLONASS (L1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5)GPS (L1+L5), GLONASS (G1), BDS (B1I+B2a), GALILEO (E1+E5a), NavIC
RadioNoNo
USBUSB Type-C 2.0, OTGUSB Type-C 2.0, OTG
WLANWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Features
SensorsFingerprint (side-mounted), accelerometer, gyro, proximity, compassFingerprint (side-mounted), accelerometer, gyro, compass
 -Virtual proximity sensing
Battery
Charging67W wired, PD3.0, QC3, 100% in 38 min33W wired, PD3.0, QC3, 100% in 52 min
TypeLi-Po 4500 mAhLi-Po 4520 mAh
Misc
ColorsBlack, Gray, Blue, GreenArctic White, Night Black, Deep Ocean Blue, Moonlight Silver
Models-M2012K11AG
PriceAbout 260 EUR€ 162.15
SAR-1.06 W/kg (head)     0.72 W/kg (body)
SAR EU-0.60 W/kg (head)     0.84 W/kg (body)
Tests
Battery life- Endurance rating 114h
Camera- Photo / Video
Display- Contrast ratio: Infinite (nominal)
Loudspeaker- -24.5 LUFS (Very good)
Performance- AnTuTu: 631850 (v8), 697216 (v9) GeekBench: 3206 (v5.1) GFXBench: 48fps (ES 3.1 onscreen)

Xiaomi Redmi K40S

  • Faster 67W Charging
  • Potentially Improved Camera
  • Slightly Better Color Accuracy (Display)
  • Premium Build Quality (likely)

  • Higher Price
  • Shorter Battery Life Compared to Poco F3
  • Macro Lens Quality (typical for this price range)

Xiaomi Poco F3

  • Exceptional Battery Life
  • Aggressive Price Point
  • Smooth 120Hz AMOLED Display
  • Excellent Performance

  • Slower 33W Charging
  • Potentially Slightly Inferior Camera
  • Build Quality (may feel less premium)

Display Comparison

Both phones feature a vibrant 6.67-inch AMOLED display with a 120Hz refresh rate, offering a fluid and immersive viewing experience. The Poco F3 advertises an 'infinite' contrast ratio, which is a nominal term, but both displays are excellent. The K40S might have slightly better color accuracy, but it's a marginal difference.

Camera Comparison

The Redmi K40S is expected to have a slightly improved camera system, potentially with a better main sensor and image processing. While the Poco F3's camera is capable, the K40S likely offers a more refined photographic experience. Both feature a similar setup with a main lens, ultrawide, and macro lens.

Performance

Powered by the Snapdragon 870, both phones deliver flagship-level performance. Expect smooth multitasking, effortless gaming, and snappy app launches. There's virtually no difference in day-to-day performance between the two.

Battery Life

The Poco F3 shines in this category. Its endurance rating of 114 hours is exceptional, significantly outperforming the Redmi K40S. While the K40S offers incredibly fast 67W charging, the Poco F3's larger battery capacity provides longer usage between charges.

Buying Guide

The Xiaomi Redmi K40S is ideal for users who prioritize fast charging, potentially better camera performance, and don't mind spending a bit more. The Xiaomi Poco F3 is perfect for those seeking incredible battery life, a smooth display, and a fantastic value proposition, especially if charging speed isn't a top concern.

Frequently Asked Questions

❓ Is the Snapdragon 870 processor enough for gaming?
Yes, the Snapdragon 870 is a powerful processor that handles demanding games with ease. Both phones offer a smooth gaming experience.
❓ Which phone has better software support?
Xiaomi typically provides consistent software updates for both Redmi and Poco devices. However, it's best to check the latest update policies on Xiaomi's official website.
❓ What is the difference in build quality?
The Redmi K40S is likely to have a slightly more premium build quality, potentially using materials like glass or aluminum. The Poco F3 might utilize more plastic components to keep the price down.